Clinical photograph of the distal digits demonstrating digital clubbing. Modality: Clinical photography; technique: macro close‑up digital image with bright‑field illumination and high resolution to emphasize nail bed morphology. Anatomical location: fingers (distal phalanges) with visible nail plates, nail beds, and periungual tissue; dorsal view highlighting the nail–bed interface. Visual features: bulbous, expanded distal digits; nail plates show increased curvature with convex nail beds; reduced angle between the nail plate and the adjacent skin; glossy, smooth periungual skin; absence of cutaneous ulcers in view; subtle subungual fullness may be present. Pathologic/clinical findings: clubbing is a clinical sign characterized by hyperplastic nail bed change; not a histologic lesion, but correlates with chronic hypoxia and systemic disease. Diagnostic significance: digital clubbing signals potential underlying cardiopulmonary pathology or hepatobiliary disease; commonly associated conditions include interstitial lung disease (idiopathic pulmonary fibrosis, bronchiectasis), chronic obstructive pulmonary disease, cyanotic heart disease, liver cirrhosis, and inflammatory bowel disease; warrants systemic workup. Differential considerations: idiopathic clubbing; secondary clubbing from pulmonary/vascular disease or congenital heart disease; alternatively pseudoclubbing from nail dystrophy. Clinical correlation: correlate with oxygen saturation, chest imaging, echocardiography, hepatic panel; multidisciplinary assessment recommended. Documented progression can guide treatment decisions and patient counseling in dermatology, pulmonology, and internal medicine.

This clinical photograph displays a dorsal view of a human hand demonstrating classic digital clubbing (hippocratic fingers). The distal phalanges of all visible fingers appear bulbous and enlarged, with an increased longitudinal and transverse curvature of the nail plates, giving them a 'watch-glass' or convex appearance. There is a visible loss of the Lovibond angle (the normal 160-degree angle between the nail base and the proximal nail fold). The skin of the hand shows a generalized reddish-to-dusky hue, suggestive of polycythemia or chronic cyanosis. These physical findings are hallmark signs of chronic hypoxemia, frequently associated with underlying conditions such as congenital cyanotic heart disease (e.g., Tetralogy of Fallot) or chronic pulmonary disease. The image serves as an educational tool for identifying secondary physical manifestations of cardiovascular and respiratory pathology.

Table 7. Management according to grade of hepatic encephalopathy (West-Haven Criteria) (36) <table><thead><tr><th>Grade of HE</th><th>Symptom description</th><th>Management in ALF</th></tr></thead><tbody><tr><td>Grade 1</td><td>Trivial lack of awareness<br>Shortened attention span<br>Impairment of addition or subtraction<br>Altered sleep rhythm</td><td>• Contact transplant enter and initiative transfer<br>• Obtain baseline CT head</td></tr><tr><td>Grade 2</td><td>Lethargy or apathy<br>Disorientation for time<br>Obvious personality change<br>Inappropriate behavior<br>Dyspraxia<br>Asterixis</td><td>• Transfer to the intensive care unit<br>• Neuro checks q1 hr</td></tr><tr><td>Grade 3</td><td>Somnolence to semistupor<br>Responsive to stimuli<br>Confusion<br>Gross disorientation<br>Bizarre behavior</td><td>• Intubation if appropriate<br>• Repeat CT head<br>• Avoid opioids and benzodiazepines for sedation<br>• Consider propofol due to short half life</td></tr><tr><td>Grade 4</td><td>Coma</td><td>• Repeat CT head<br>• Consider intracranial pressure monitor if transplant candidate<br>• Initiate treatment for cerebral edema</td></tr></tbody></table> ALF, acute liver failure; CT, computed tomography. HE, hepatic encephalopathy.

This pathophysiology diagram illustrates the multi-organ signaling pathways involved in the development of hepatic encephalopathy (HE) driven by oxidative stress and hyperammonemia. The process begins with systemic metabolic rate changes: an increased metabolic rate and electron transport chain activity lead to a depletion of antioxidant enzymes (SOD and GPx) and the exacerbation of Reactive Oxygen Species (ROS). Concurrently, gut dysbiosis and short-chain fatty acids (SCFA) trigger pro-inflammatory cytokines, affecting protein metabolism and contributing to hepatic failure. In the liver, hepatic failure results in NH3 (ammonia) accumulation and increased MDA (malondialdehyde) levels. High levels of NH3 (≥ 500 μM) enter systemic circulation and, together with ROS, induce glial swelling and systemic inflammation. The final stage of the pathway shows these systemic effects crossing the blood-brain barrier, leading to the clinical manifestation of hepatic encephalopathy. The diagram highlights the compensatory struggle between homeostasis and oxidative damage in the context of liver dysfunction.

A clinical photograph of a person's hand on a blue background, demonstrating distal leuconychia (whitening of the distal nail plate). The image shows several fingers where the distal half to third of the nail plate exhibits a prominent, opaque white or pale discoloration. This is clearly demarcated from the proximal portion of the nail plate, which maintains a normal, pinkish translucency. This specific pattern of nail discoloration is a documented complication following the application and removal of artificial nails, often associated with chemical exposure to adhesives like methyl cyanoacrylate or mechanical trauma to the nail surface. The subject has a dark skin tone (Fitzpatrick type IV-VI), and visible features include skin wrinkling over the interphalangeal joints and decorative rings on the second and third fingers. This visual serves as an educational example of chemical or traumatic nail plate dystrophy in the context of cosmetic nail procedures.

Clinical photograph showing nail dysplasia in the hands and feet, a characteristic finding of Nail-Patella Syndrome (NPS). The upper image displays the fingernails, which are hypoplastic and misshapen, appearing notably small and triangular, particularly on the thumbs. The lower image shows the toenails, which exhibit more severe onychodystrophy. The toenails are markedly reduced in size, thickened, and demonstrate significant leuconychia (opaque white discoloration) and surface irregularities, including pitting and longitudinal ridging. This visual presentation illustrates a key diagnostic feature of NPS, which often affects the nails of the hands more prominently than the feet, with the radial side (thumbs) typically being most severely involved. These clinical signs are often associated with other systemic features of the syndrome, such as patellar hypoplasia, iliac horns, and progressive renal disease.

Clinical photography of the anterior chest and neck shows multiple erythematous, pinpoint lesions with radiating fine vessels consistent with spider naevi (spider angiomas). The lesions are small (approximately 1–3 mm), with a central red dot and a starburst pattern of telangiectatic capillaries that blanch on gentle compression. Distribution is predominantly on the upper chest and anterior neck, with some involvement of the shoulders. Surrounding skin is otherwise unremarkable, without edema or induration. This in vivo image demonstrates classic cutaneous telangiectasia arising from dilation of preexisting arterioles and capillary beds, producing the characteristic radiating vascular spokes. Spider naevi are benign vascular lesions commonly seen in young individuals but their multiplicity or new appearance in adults can indicate hormonal influences (estrogen excess) or underlying liver disease (cirrhosis, portal hypertension), pregnancy, or robust sun exposure in combination with vascular fragility. Clinically, identification should prompt correlation for systemic conditions, especially in patients with signs of liver dysfunction or heavy alcohol use. Differential diagnoses include cherry angioma, venous lake, capillary malformation, or telangiectasia related to hereditary hemorrhagic telangiectasia. This image is a useful educational reference for dermatology and internal medicine, illustrating recognition, documentation, and the clinical significance of vascular skin lesions in clinical practice today.

Clinical photography of the cutaneous surface reveals multiple spider telangiectases (spider angiomas) on the trunk. The lesions are characterized by central arteriolar dilation with radiating fine capillaries, producing a red, star-like or spider-web appearance. These blanch with pressure and tend to be bright red to pink. This pattern is typical for telangiectatic cutaneous vascular lesions and is commonly associated with estrogen-dominant states, pregnancy, hormonal therapy, and chronic liver disease with cirrhosis. In the dermatologic context, such findings are important clinical clues; in hepatology, their presence correlates with hyperestrinism and portal hypertension. Differential diagnoses include benign spider nevi vs cherry angiomas, rosacea-related telangiectasia, and congenital vascular malformations. For patients with suspected cirrhosis, these findings warrant clinical correlation and liver function assessment, including AST/ALT, bilirubin, albumin, INR, and imaging as indicated. Overall, spider telangiectases serve as a non-invasive cutaneous biomarker that informs risk stratification for liver disease, guides differential diagnosis, and supports multidisciplinary evaluation for hepatic pathology. In educational and research contexts, this photograph illustrates how cutaneous signs reflect systemic pathology. It may be used to teach correlation between liver disease and dermatologic manifestations, to train natural language processing and image recognition algorithms for vascular lesions, and to support patient counseling about prognosis and monitoring.

Clinical photograph comparison of a patient's eyes demonstrating the resolution of jaundice. Panel (a) shows bilateral scleral icterus, characterized by a distinct yellowing of the sclera and bulbar conjunctiva, marked with blue arrows. This appearance is secondary to hyperbilirubinemia often associated with hepatobiliary disease. Panel (b) shows the same patient after two weeks of treatment, demonstrating a marked reduction in the yellow hue. The sclera has returned to a near-normal white color, indicating a decrease in systemic bilirubin levels and successful therapeutic intervention. This side-by-side comparison serves as an educational tool for identifying physical signs of liver dysfunction and monitoring clinical progression during treatment.

This clinical photograph displays a pediatric patient demonstrating severe systemic jaundice. The primary diagnostic feature is profound scleral icterus, characterized by a bright yellow discoloration of the entire visible sclera in both eyes. The upper eyelids are manually elevated to fully reveal the extent of the icterus. Additionally, the patient's facial skin, forehead, and upper chest exhibit a marked yellowish hue (jaundice), consistent with hyperbilirubinemia. The patient appears to be in a clinical setting, as evidenced by medical tubing and linens visible in the background. This image is an educational example of the physical manifestations of liver dysfunction or hemolytic processes, such as hepatitis, Wilsonian crisis, or acute toxicity, which can lead to significant accumulation of bilirubin in mucosal surfaces and skin.

This clinical comparison photograph illustrates the dermatological management of xanthelasma palpebrarum using laser therapy. Panel A displays the 'before treatment' state of an adult patient, showing characteristic yellowish, well-demarcated, slightly raised plaques located on the medial aspect of the upper eyelids bilaterally. The lesions exhibit a soft, velvety texture typical of cholesterol deposits. Panel B displays the 'after treatment' outcome following the use of an Erbium laser. In this post-operative view, the xanthomatous lesions have been successfully ablated. The skin of the periorbital region shows resolution of the yellow plaques with minimal residual erythema or scarring in the treated zones. This comparison serves as an educational example of cosmetic and clinical dermatology, specifically highlighting the efficacy of laser resurfacing for benign periorbital skin lesions and the aesthetic restoration of eyelid skin uniformity.

This clinical photograph of a patient with closed eyes demonstrates bilateral, symmetric xanthelasma palpebrarum. The primary findings are multiple sharply demarcated, yellowish plaques located on the medial and superior aspects of both the upper and lower eyelids. The lesions exhibit a velvety or slightly irregular texture and are concentrated around the inner canthi, extending laterally along the eyelid creases and partially toward the eyelash margins. The surrounding periorbital skin shows mild hyperpigmentation and fine wrinkling, particularly in the areas adjacent to the lipid deposits. There are no signs of acute inflammatory changes such as significant erythema or edema. These characteristic cutaneous markers are associated with localized cholesterol accumulations and may indicate underlying dyslipidemia or systemic histiocytic disorders, serving as an important diagnostic sign in dermatology and internal medicine.