Very important clinical signs in medical system wise in detail
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🩺 Important Clinical Signs - System-Wise Comprehensive Reference
Compiled from Harrison's Principles of Internal Medicine (22nd Ed.), Bradley & Daroff's Neurology in Clinical Practice, Goldman-Cecil Medicine, Robbins Pathology, Murray & Nadel's Respiratory Medicine, and other authoritative sources.
1. CARDIOVASCULAR SYSTEM
General Inspection
| Sign | Description | Clinical Significance |
|---|---|---|
| Central cyanosis | Bluish discoloration of lips, tongue, mucous membranes | Right-to-left cardiac or pulmonary shunt; desaturated blood reaches systemic circulation |
| Peripheral cyanosis (acrocyanosis) | Cyanosis of fingertips/toes only | Reduced extremity blood flow - severe HF, shock, PVD |
| Differential cyanosis | Cyanosis of lower extremities but NOT upper extremities | Large PDA with pulmonary hypertension and right-to-left shunting at great vessel level |
| Malar flush (malar telangiectasia) | Butterfly-shaped reddish flush over cheeks | Advanced mitral stenosis or scleroderma |
| Jaundice | Yellow discoloration of skin/sclerae | Advanced right heart failure with congestive hepatomegaly |
| Xanthomas (tendon) | Yellowish nodules along tendon sheaths/extensor surfaces | Hereditary hyperlipidemia; premature atherosclerosis |
| Palmar crease xanthomas | Xanthomas in palmar creases | Specific for Type III hyperlipoproteinemia |
| Osler-Weber-Rendu telangiectasia | Telangiectasias on lips, tongue, mucous membranes | Hereditary hemorrhagic telangiectasia; may cause pulmonary AV shunting |
Vital Signs / Pulse
| Sign | Description | Clinical Significance |
|---|---|---|
| Pulsus paradoxus | Drop in systolic BP >10 mmHg during inspiration | Cardiac tamponade, severe asthma, COPD |
| Pulsus alternans | Alternating strong and weak beats in regular rhythm | Severe left ventricular dysfunction / heart failure |
| Pulsus bisferiens | Double-peaked pulse per cardiac cycle | Mixed aortic stenosis + regurgitation; hypertrophic obstructive cardiomyopathy (HOCM) |
| Corrigan's (water-hammer) pulse | Bounding, rapidly rising and collapsing pulse | Aortic regurgitation |
| Pulsus parvus et tardus | Weak and slow-rising pulse | Severe aortic stenosis |
| Jerky pulse | Abrupt rise then sudden drop | HOCM |
Jugular Venous Pressure (JVP)
| Sign | Description | Clinical Significance |
|---|---|---|
| Elevated JVP | JVP >4 cm above sternal angle at 45° | Right heart failure, cardiac tamponade, constrictive pericarditis, SVC obstruction |
| Kussmaul's sign | Paradoxical rise in JVP on inspiration | Constrictive pericarditis, restrictive cardiomyopathy, right ventricular infarction |
| Prominent 'a' wave | Large 'a' wave in JVP waveform | Tricuspid stenosis, pulmonary hypertension, HOCM |
| Giant 'v' wave (cv wave) | Prominent systolic wave | Tricuspid regurgitation |
| Absent 'a' wave | No 'a' wave in JVP | Atrial fibrillation |
Precordial / Auscultation
| Sign | Description | Clinical Significance |
|---|---|---|
| S3 gallop (ventricular gallop) | Low-pitched sound in early diastole ("Ken-tuc-ky") | Heart failure, dilated cardiomyopathy, volume overload (normal in children/young adults) |
| S4 gallop (atrial gallop) | Low-pitched sound in late diastole ("Ten-nes-see") | Reduced ventricular compliance - hypertensive heart disease, hypertrophic cardiomyopathy, acute MI |
| Opening snap | High-pitched early diastolic click | Mitral stenosis (pliable valve) |
| Ejection click | Early systolic click | Bicuspid aortic valve, pulmonary stenosis |
| Mid-systolic click | Click in mid-systole followed by late systolic murmur | Mitral valve prolapse |
| Pericardial friction rub | Scratchy three-component (systole, diastole, presystole) sound | Acute pericarditis |
| Loud P2 | Accentuated pulmonary component of S2 | Pulmonary hypertension |
| Fixed splitting of S2 | S2 splitting unchanged with respiration | Atrial septal defect (ASD) |
| Paradoxical splitting of S2 | Splitting narrows on inspiration | Left bundle branch block, severe aortic stenosis |
Peripheral Signs of Specific Diseases
| Sign | Description | Disease |
|---|---|---|
| Osler's nodes | Tender, erythematous nodules on fingertip pads | Infective endocarditis (immune complex deposition) |
| Janeway lesions | Non-tender hemorrhagic macules on palms/soles | Infective endocarditis (septic emboli) |
| Roth spots | Oval, pale-centered retinal hemorrhages | Infective endocarditis |
| Splinter hemorrhages | Linear reddish-brown hemorrhages under nails | Infective endocarditis (also trauma) |
| Clubbing | Obliteration of the angle between nail and nail bed | Cyanotic CHD, infective endocarditis, lung cancer, pulmonary fibrosis, cyanotic congenital heart disease |
| Ankle/pitting edema | Bilateral pitting edema | Right heart failure, biventricular failure |
2. RESPIRATORY SYSTEM
Inspection
| Sign | Description | Clinical Significance |
|---|---|---|
| Tachypnea | Respiratory rate >20/min | Pneumonia, pulmonary embolism, HF, sepsis, anxiety |
| Barrel chest | Increased AP diameter, horizontal ribs | COPD/emphysema (hyperinflation) |
| Pursed-lip breathing | Breathing out through pursed lips | COPD (reduces air trapping) |
| Accessory muscle use | Use of SCM, scalenes during breathing at rest | Severe airway obstruction or respiratory failure |
| Paradoxical breathing | Abdomen moves in during inspiration | Diaphragmatic paralysis or fatigue |
| Intercostal retraction | Inward movement of intercostal spaces during inspiration | Upper airway obstruction in children |
| Tracheal deviation | Shift of trachea from midline | Toward: collapse/fibrosis; Away from: tension pneumothorax, large effusion |
Percussion
| Sign | Description | Clinical Significance |
|---|---|---|
| Stony dullness | Absolute dullness on percussion | Pleural effusion |
| Dullness | Impaired resonance | Consolidation (pneumonia), collapse, hemothorax |
| Hyperresonance | Exaggerated drumlike note | Pneumothorax, emphysema |
| Shifting dullness | Dullness shifts with patient position | Free pleural effusion |
Auscultation
| Sign | Description | Clinical Significance |
|---|---|---|
| Bronchial breath sounds in periphery | High-pitched, hollow sounds where vesicular sounds expected | Consolidation (fluid-filled lung transmits sound) |
| Crackles (crepitations) | Fine: late inspiratory, Coarse: early inspiratory | Fine: interstitial lung disease, pulmonary fibrosis, early HF; Coarse: pneumonia, bronchiectasis |
| Wheeze (rhonchus) | Musical, high-pitched expiratory sound | Asthma, COPD, bronchospasm |
| Stridor | Harsh, high-pitched inspiratory sound | Upper airway obstruction (croup, epiglottitis, foreign body) |
| Pleural rub | Creaking, grating sound | Pleuritis |
| Aegophony (E to A change) | Patient says "E," clinician hears "A" over consolidated area | Lobar pneumonia, above pleural effusion |
| Whispering pectoriloquy | Whispered words heard clearly through stethoscope | Consolidation |
3. GASTROINTESTINAL / ABDOMINAL SYSTEM
Inspection & General
| Sign | Description | Clinical Significance |
|---|---|---|
| Caput medusae | Dilated superficial abdominal veins radiating from umbilicus | Portal hypertension |
| Cullen's sign | Periumbilical bruising/ecchymosis | Retroperitoneal hemorrhage (acute pancreatitis, ectopic pregnancy) |
| Grey Turner's sign | Flank (loin) ecchymosis | Retroperitoneal hemorrhage (severe acute pancreatitis) |
| Sister Mary Joseph nodule | Hard nodule at the umbilicus | Peritoneal metastasis (gastric, colonic, pancreatic cancer) |
| Visible peristalsis | Rippling waves visible through abdominal wall | Gastric outlet obstruction (pyloric stenosis); small bowel obstruction |
| Abdominal distension | Fullness/bulging of the abdomen | 5 Fs: Flatus, Fluid (ascites), Fat, Fetus, Focal mass |
Palpation
| Sign | Description | Clinical Significance |
|---|---|---|
| Murphy's sign | Inspiratory arrest on deep palpation in the right hypochondrium | Acute cholecystitis (inflamed gallbladder) |
| McBurney's point tenderness | Maximal tenderness 1/3 from ASIS to umbilicus | Appendicitis |
| Rovsing's sign | Palpation of LIF causes pain in RIF | Appendicitis (peritoneal irritation spreads) |
| Psoas sign | Pain on right hip extension/passive flexion | Retrocaecal appendicitis; psoas abscess |
| Obturator sign | Pain on internal rotation of flexed right hip | Pelvic appendicitis; obturator hernia |
| Rebound tenderness (Blumberg's sign) | Pain worse on release than compression | Peritoneal irritation/peritonitis |
| Guarding | Voluntary or involuntary abdominal muscle contraction | Peritonitis |
| Rigidity (Board-like abdomen) | Involuntary spasm of abdominal muscles | Perforated viscus, generalized peritonitis |
| Carnett's sign | Tenderness increases when patient tenses abdominal muscles | Pain is in the abdominal wall, not visceral |
| Courvoisier's sign (law) | Palpable, non-tender gallbladder in jaundiced patient | Carcinoma of the head of pancreas (NOT cholecystitis - chronic inflammation makes GB fibrotic) |
| Boas' sign | Referred hyperesthesia in right subscapular area | Acute cholecystitis |
| Shifting dullness + Fluid thrill | Dullness shifts with position; fluid wave palpated across abdomen | Ascites (>500 mL for shifting dullness; >1000 mL for fluid thrill) |
Rectal / Liver
| Sign | Description | Clinical Significance |
|---|---|---|
| Hepatomegaly | Liver palpable below right costal margin (>15 cm span by percussion) | Hepatitis, cirrhosis (early), right HF, malignancy, fatty liver |
| Splenomegaly | Spleen palpable below left costal margin | Portal hypertension, hematological malignancy, infections (malaria, EBV), hemolytic anemia |
| Traube's space dullness | Dullness over Traube's space (normally tympanic) | Splenomegaly, left pleural effusion, full stomach |
4. NERVOUS SYSTEM (NEUROLOGY)
Upper Motor Neuron (UMN) Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Babinski's sign (extensor plantar response) | Extension of great toe + fan-out of other toes on stroking the lateral plantar surface from heel upward | PATHOGNOMONIC of UMN lesion (corticospinal tract damage). Normal in infants <2 years |
| Spasticity (clasp-knife) | Velocity-dependent increased tone that suddenly gives way | UMN lesion (stroke, MS, cervical myelopathy) |
| Clonus | Rhythmic, involuntary muscle contractions on sustained stretch | UMN lesion; best elicited at ankle or patella |
| Hyperreflexia | Exaggerated deep tendon reflexes | UMN lesion |
| Hoffman's sign | Flicking the middle finger nail causes thumb/index finger flexion | UMN lesion in the cervical cord or above |
Lower Motor Neuron (LMN) Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Hypotonia / flaccidity | Reduced or absent muscle tone | LMN lesion (anterior horn cell, nerve root, peripheral nerve, NMJ, muscle) |
| Fasciculations | Spontaneous, fine, visible muscle twitching | Denervation (ALS, radiculopathy, benign) |
| Hyporeflexia / areflexia | Reduced or absent deep tendon reflexes | LMN lesion, peripheral neuropathy, Guillain-Barré |
| Muscle wasting (atrophy) | Visible loss of muscle bulk | Denervation, disuse |
Meningeal Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Nuchal rigidity | Resistance to passive neck flexion | Pathognomonic sign of meningeal irritation (meningitis, SAH) |
| Kernig's sign | With hip flexed to 90°, inability to extend the knee beyond 135° due to pain | Meningeal irritation (meningitis, SAH) |
| Brudzinski's sign | Passive neck flexion causes involuntary flexion of both hips and knees | Meningeal irritation |
| Jolt accentuation | Headache worsens with horizontal head rotation (2-3 times/sec) | More sensitive than Kernig's/Brudzinski's for meningitis |
Cerebellar Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Dysdiadochokinesia | Inability to perform rapid alternating movements | Cerebellar lesion (ipsilateral) |
| Past-pointing (dysmetria) | Overshooting the target on finger-nose test | Cerebellar ataxia |
| Intention tremor | Tremor that worsens as target is approached | Cerebellar pathology |
| Nystagmus | Rhythmic involuntary eye movement; fast phase toward lesion in peripheral; complex patterns in central | Cerebellar, vestibular (peripheral or central), brainstem |
| Ataxic gait (broad-based) | Wide-based, unsteady, staggering gait | Cerebellar ataxia, sensory ataxia |
| Romberg's sign (positive) | Falls when eyes closed (stable with eyes open) | Sensory ataxia (dorsal column/posterior cord disease, peripheral neuropathy). NOT cerebellar (cerebellar patients sway with eyes open too) |
Cranial Nerve Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Horner's syndrome | Miosis + ptosis + anhidrosis | Sympathetic chain interruption (Pancoast tumor, carotid dissection, lateral medullary syndrome) |
| Internuclear ophthalmoplegia (INO) | Impaired adduction on lateral gaze with contralateral abducting nystagmus | MLF lesion; bilateral INO is MS until proven otherwise |
| Marcus Gunn pupil (RAPD) | Pupil dilates when light swung from good to affected eye (swinging flashlight test) | Optic nerve or extensive retinal lesion |
| Argyll Robertson pupils | Accommodation-convergence reflex intact but light reflex absent; small, irregular, unequal pupils | Neurosyphilis ("Prostitute's pupil" - accommodates but does not react) |
| Bell's palsy pattern | Complete unilateral facial weakness including forehead (LMN CN VII) | LMN: Bell's palsy, parotid tumor, iatrogenic |
| UMN facial palsy | Forehead spared (bilateral cortical representation) | Stroke, MS |
Extrapyramidal Signs
| Sign | Description | Clinical Significance |
|---|---|---|
| Cogwheel rigidity | Interrupted, ratchet-like increase in tone | Parkinson's disease (rigidity + superimposed tremor) |
| Lead-pipe rigidity | Uniform, constant increased tone | Parkinson's disease (without tremor component) |
| Resting tremor (pill-rolling) | 4-6 Hz tremor at rest, disappears with movement | Parkinson's disease |
| Bradykinesia | Slowness of movement; reduced amplitude with repetition | Parkinson's disease |
| Festinant gait | Shuffling, small steps, forward stoop, reduced arm swing, difficulty stopping | Parkinson's disease |
| Glabellar tap sign (Myerson's sign) | Failure to suppress blink reflex to repeated tapping of glabella | Parkinson's disease (normal person suppresses after 2-3 taps) |
5. ENDOCRINE SYSTEM
Thyroid
| Sign | Description | Clinical Significance |
|---|---|---|
| Exophthalmos (proptosis) | Protrusion of eyeballs | Graves' disease (thyroid eye disease) |
| Lid lag (von Graefe's sign) | Upper lid lags behind eyeball on downward gaze | Hyperthyroidism |
| Lid retraction (Dalrymple's sign) | Wide-eyed stare (white sclera visible above iris) | Hyperthyroidism |
| Pretibial myxedema | Non-pitting, waxy, orange-peel textured skin over shins | Graves' disease (despite being called myxedema) |
| Thyroid acropachy | Clubbing + soft tissue swelling of digits | Graves' disease |
| Pemberton's sign | Facial flushing, distended neck veins, stridor on raising arms overhead | Retrosternal goiter causing SVC compression |
| Myxedema facies | Puffy face, periorbital edema, loss of lateral eyebrow (Queen Anne's sign), dry coarse hair | Hypothyroidism |
| Berry's sign | Absence of carotid pulsation in the neck | Carcinoma of the thyroid (encasing the carotid) |
Parathyroid / Calcium
| Sign | Description | Clinical Significance |
|---|---|---|
| Chvostek's sign | Tapping the facial nerve (just anterior to ear) causes ipsilateral facial muscle spasm | Hypocalcemia (latent tetany). Also present in ~10% of normal individuals (less specific) |
| Trousseau's sign | Inflation of BP cuff above systolic for 3 minutes causes carpal spasm (main d'accoucheur - obstetrician's hand) | Hypocalcemia - MORE SPECIFIC than Chvostek's sign |
Adrenal / Pituitary
| Sign | Description | Clinical Significance |
|---|---|---|
| Buffalo hump + central obesity + striae | Fat deposition at back of neck, truncal obesity, purple striae | Cushing's syndrome |
| Moon face | Round, plethoric face | Cushing's syndrome |
| Acanthosis nigricans | Velvety, hyperpigmented skin in axillae, neck, groin | Insulin resistance (T2DM, PCOS), rarely internal malignancy (gastric cancer) |
| Bronze hyperpigmentation | Generalized hyperpigmentation including mucosal surfaces, scars, palmar creases | Addison's disease (primary adrenal insufficiency - elevated ACTH stimulates melanocytes) |
6. MUSCULOSKELETAL / RHEUMATOLOGY
| Sign | Description | Clinical Significance |
|---|---|---|
| Heberden's nodes | Hard bony swellings at DIP joints | Osteoarthritis |
| Bouchard's nodes | Hard bony swellings at PIP joints | Osteoarthritis |
| Swan-neck deformity | PIP hyperextension + DIP flexion | Rheumatoid arthritis |
| Boutonnière deformity | PIP flexion + DIP hyperextension | Rheumatoid arthritis |
| Z-deformity of thumb | Thumb IP joint hyperextension + MCP joint flexion | Rheumatoid arthritis |
| Ulnar deviation | Fingers deviate toward ulnar side at MCP joints | Rheumatoid arthritis |
| Malar (butterfly) rash | Erythematous rash over malar eminences sparing nasolabial folds | SLE |
| Gottron's papules | Violaceous, scaly papules over MCP, PIP, DIP joints | Dermatomyositis |
| Gottron's sign | Erythematous rash over elbows, knees | Dermatomyositis |
| Heliotrope rash | Violaceous periorbital discoloration | Dermatomyositis |
| Mechanic's hands | Hyperkeratotic, cracked skin over lateral fingers | Antisynthetase syndrome / myositis |
| Shawl sign | Erythematous rash over upper back/shoulders | Dermatomyositis |
| Subcutaneous nodules | Firm, non-tender nodules on extensor surfaces (elbow, occiput, sacrum) | Rheumatoid arthritis; also Rheumatic fever (Jones criteria) |
| Osler's nodes (joint context) | Tender nodules on finger pads | Reactive arthritis / infective endocarditis |
| Tophi | Chalky white deposits in skin/cartilage (ear helix, olecranon bursa) | Chronic gout (monosodium urate deposits) |
| Painless urethritis + conjunctivitis + arthritis | Reiter's triad ("Can't see, can't pee, can't climb a tree") | Reactive arthritis (formerly Reiter's syndrome) |
| Calcinosis | Subcutaneous calcium deposits | CREST syndrome / systemic sclerosis |
| Sclerodactyly | Skin tightening/hardening of fingers | Systemic sclerosis |
| Raynaud's phenomenon | Digits turn white (ischemia), blue (cyanosis), red (reperfusion) with cold/stress | Primary: young women; Secondary: systemic sclerosis, SLE, vibration white finger |
7. RENAL SYSTEM
| Sign | Description | Clinical Significance |
|---|---|---|
| Pitting edema | Bilateral pitting edema in nephrotic syndrome | Hypoalbuminemia causing reduced oncotic pressure |
| Periorbital/facial edema | Puffy face, especially on waking | Nephrotic syndrome (hallmark early sign) |
| Flank pain / CVA tenderness | Tenderness at costovertebral angle | Pyelonephritis, renal calculi, renal vein thrombosis |
| Uraemic frost | White crystalline deposits on skin | Severe terminal uraemia (very rare today) |
| Uraemic fetor | Fishy/ammoniacal breath odor | Uraemia (bacterial conversion of urea in saliva) |
| Asterixis (flapping tremor) | Brief, irregular lapses in sustained posture ("liver flap") | Hepatic encephalopathy, uraemia, hypercapnia, electrolyte disturbance |
| Palpable kidneys (ballotting) | Bimanually palpable kidney | Polycystic kidney disease, hydronephrosis, renal tumor |
8. HEMATOLOGY
| Sign | Description | Clinical Significance |
|---|---|---|
| Pallor | Paleness of skin, conjunctivae, palmar creases, nail beds | Anemia (clinical detection when Hb <8-9 g/dL) |
| Koilonychia (spoon nails) | Concave, spoon-shaped nails | Iron-deficiency anemia |
| Angular stomatitis (cheilosis) | Cracks and fissures at corners of mouth | Iron-deficiency or B12/folate deficiency anemia |
| Glossitis (smooth tongue) | Smooth, sore, beefy red tongue | Vitamin B12, folate, iron deficiency |
| Plummer-Vinson syndrome | Iron-deficiency anemia + dysphagia + post-cricoid web | Pre-malignant condition |
| Petechiae | Pinpoint, non-blanching hemorrhagic spots | Thrombocytopenia, vasculitis, meningococcemia |
| Purpura | Larger non-blanching hemorrhagic spots | Thrombocytopenia, clotting disorders |
| Ecchymoses | Bruising | Bleeding disorder, anticoagulant use, coagulopathy |
| Hemarthrosis | Bleeding into joints | Hemophilia A or B (factor VIII or IX deficiency) |
| Virchow's node | Firm, enlarged left supraclavicular lymph node | GI malignancy (especially stomach cancer) - "sentinel node" |
9. OPHTHALMOLOGY (Eye Signs of Systemic Disease)
| Sign | Description | Clinical Significance |
|---|---|---|
| Kayser-Fleischer rings | Golden-brown ring at periphery of cornea (Descemet's membrane) | Wilson's disease (hepatolenticular degeneration) - copper deposition |
| Arcus senilis (corneal arcus) | Grayish-white ring around the cornea | >45 years: normal aging; <45 years: hypercholesterolemia |
| Papilledema | Blurring and elevation of optic disc margins, loss of venous pulsations | Raised intracranial pressure |
| Diabetic retinopathy | Microaneurysms, hard exudates, flame hemorrhages, new vessels | Diabetes mellitus |
| Hypertensive retinopathy (Keith-Wagener grades) | AV nipping, copper/silver wiring, flame hemorrhages, papilledema | Hypertension |
| Roth spots | Oval pale-centered retinal hemorrhages | Infective endocarditis, severe anemia |
| Band keratopathy | Calcium deposits across central cornea (band-shaped) | Chronic hypercalcemia (sarcoidosis, hyperparathyroidism) |
| Cherry red spot (macula) | Normal macula stands out as red spot against pale retina | Central retinal artery occlusion; also lysosomal storage diseases (Tay-Sachs, Niemann-Pick) |
| Angioid streaks | Irregular cracks radiating from optic disc | Pseudoxanthoma elasticum, Paget's disease of bone, sickle cell disease |
10. DERMATOLOGY (Skin Signs of Systemic Disease)
| Sign | Description | Clinical Significance |
|---|---|---|
| Erythema nodosum | Tender, red, raised nodules on shins (anterior aspect) | Sarcoidosis, IBD, streptococcal infection, TB, drugs (OCP), pregnancy |
| Erythema multiforme | Target lesions (three zones: central, ring, outer) | Herpes simplex virus (most common), Mycoplasma, drugs |
| Stevens-Johnson syndrome | >10% BSA epidermal detachment with mucosal involvement | Severe drug reaction (sulfonamides, allopurinol, anticonvulsants) |
| Pyoderma gangrenosum | Rapidly expanding, painful, purulent, undermined-edged ulcer | IBD (Crohn's, UC), rheumatoid arthritis, hematologic malignancy |
| Necrobiosis lipoidica | Yellow-brown, waxy, telangieciatic plaques on shins | Diabetes mellitus (may precede DM diagnosis) |
| Vitiligo | Depigmented macules | Autoimmune: T1DM, Addison's disease, thyroid disease, pernicious anemia |
| Cullen's sign / Grey Turner's | Periumbilical / flank bruising | Acute hemorrhagic pancreatitis |
| Livedo reticularis | Netlike, bluish-purple mottling of skin | Antiphospholipid syndrome, PAN, cholesterol emboli, Sneddon's syndrome |
| Spider nevi | Central arteriole with radiating vessels; blanches then refills on pressure | Chronic liver disease (>5 on upper body = pathological), pregnancy, OCP |
| Palmar erythema | Erythema over thenar/hypothenar eminences and fingertips | Chronic liver disease, pregnancy, thyrotoxicosis, RA |
| Leukocytoclastic vasculitis | Palpable purpura, often on lower extremities | IgA vasculitis (HSP), drug-induced vasculitis, infections |
11. SIGNS OF SHOCK & HEMODYNAMIC COMPROMISE
| Sign | Clinical Significance |
|---|---|
| Hypotension (SBP <90 mmHg or >30 drop from baseline) | All shock states |
| Tachycardia | Compensatory response; early sign |
| Oliguria (<0.5 mL/kg/hr) | Reduced renal perfusion |
| Cool, mottled extremities | Reduced cardiac output / peripheral vasoconstriction (cardiogenic/distributive shock) |
| Clouded sensorium | Reduced cerebral perfusion |
| Delayed capillary refill (>2 sec) | Reduced peripheral perfusion |
| Warm, flushed peripheries + hypotension | Distributive shock (septic/anaphylactic) - vasodilation |
12. QUICK EPONYM REFERENCE TABLE
| Eponym | System | Key Feature |
|---|---|---|
| Cullen's sign | Abdomen/GI | Periumbilical bruising = retroperitoneal hemorrhage |
| Grey Turner's sign | Abdomen/GI | Flank bruising = retroperitoneal hemorrhage |
| Murphy's sign | GI | RUQ pain on inspiration = acute cholecystitis |
| Courvoisier's sign | GI/HPB | Painless jaundice + palpable GB = pancreatic head Ca |
| Rovsing's sign | GI | LIF pressure causes RIF pain = appendicitis |
| McBurney's sign | GI | RIF tenderness = appendicitis |
| Babinski's sign | Neurology | Extensor plantar = UMN lesion |
| Kernig's sign | Neurology | Resistance to knee extension with hip flexed = meningism |
| Brudzinski's sign | Neurology | Neck flexion → hip/knee flexion = meningism |
| Romberg's sign | Neurology | Falls with eyes closed = sensory ataxia |
| Chvostek's sign | Endocrine | Facial spasm on nerve tap = hypocalcemia |
| Trousseau's sign | Endocrine | Carpal spasm with BP cuff = hypocalcemia (more specific) |
| Corrigan's pulse | CVS | Bounding water-hammer pulse = aortic regurgitation |
| Kussmaul's sign | CVS | JVP rises on inspiration = constrictive pericarditis |
| Virchow's node | Hematology | Left supraclavicular node = GI malignancy |
| Kayser-Fleischer ring | Ophthalmology | Corneal copper ring = Wilson's disease |
| Heberden's nodes | MSK | DIP bony swellings = osteoarthritis |
| Osler's nodes | CVS/Infective | Tender finger pad nodules = infective endocarditis |
| Janeway lesions | CVS/Infective | Non-tender palmar hemorrhages = infective endocarditis |
| Sister Mary Joseph nodule | GI/Oncology | Umbilical nodule = peritoneal metastasis |
| Pemberton's sign | Endocrine | Arm-raising causes stridor = retrosternal goiter |
| Argyll Robertson pupil | Neurology | Accommodates but doesn't react = neurosyphilis |
Sources:
- Harrison's Principles of Internal Medicine, 22nd Ed. (Physical Examination of the Cardiovascular System, Respiratory, Neurology sections)
- Bradley & Daroff's Neurology in Clinical Practice - Pathological Hyperreflexia and Pathological Reflexes
- Goldman-Cecil Medicine, International Edition - Clinical Signs in Shock
- Robbins & Cotran Pathologic Basis of Disease - Chvostek & Trousseau signs in hypocalcemia
- Murray & Nadel's Textbook of Respiratory Medicine - Physical Examination
- Frameworks for Internal Medicine - Trousseau's/Chvostek's signs
Clinical Pearl: Signs should always be interpreted in the clinical context. A single sign rarely makes a diagnosis - patterns of signs, symptoms, and investigations together guide clinical decision-making. The sensitivity and specificity of individual signs vary widely (e.g., Trousseau's sign is MORE specific than Chvostek's for hypocalcemia; Romberg's sign tests the dorsal columns, NOT the cerebellum).
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