Sudden small many Crinkly hair in which deficiency?
Reading Document
Medical Text Search
crinkly kinky hair deficiency nutritional micronutrient
GradeResponse
Copper Deficiency — Crinkly/Kinky Hair
Sudden onset of small, crinkly (kinky) hair is a classic feature of Copper (Cu) deficiency, most famously seen in Menkes Kinky Hair Syndrome.
Key Points
| Feature | Detail |
|---|---|
| Deficiency | Copper (Cu) |
| Classic syndrome | Menkes Kinky Hair Syndrome |
| Inheritance | X-linked recessive |
| Gene mutation | ATP7A (copper-transporting ATPase) |
| Hair finding | Short, sparse, twisted/crinkly (pili torti) hair |
| Other features | Intellectual disability, hypocupremia, decreased ceruloplasmin, neurodegeneration |
| Prognosis | Often fatal within 5 years (dissecting aneurysms / cardiac rupture) |
Why Copper?
Copper is a cofactor for lysyl oxidase, which cross-links collagen and elastin, and for other enzymes involved in pigmentation and neurological function. Defective copper transport leads to:
- Kinky, brittle, depigmented hair (due to abnormal keratin cross-linking)
- Connective tissue fragility
- Neurodegeneration
Mnemonic
"Menkes = Kinky hair = Copper deficiency"
(Harrison's Principles of Internal Medicine, 21st Ed., p. 9250)
Hypothyroid?
Medical Text Search
hypothyroidism clinical features symptoms signs
Medical Text Search
hypothyroidism diagnosis treatment management
GradeResponse
GradeResponse
Hypothyroidism
Causes
| Type | Common Causes |
|---|---|
| Primary | Hashimoto's thyroiditis (most common), post-thyroidectomy, radioiodine therapy, iodine deficiency |
| Secondary | Pituitary TSH deficiency |
| Tertiary | Hypothalamic TRH deficiency |
| Drug-induced | Lithium, amiodarone, anti-thyroid drugs |
Clinical Features
(Harrison's, p. 10699)
General
- Fatigue, lethargy, weight gain, cold intolerance
- Dry coarse skin, pallor
- Dry, coarse, brittle hair; hair loss
- Puffiness of face, hands, feet (myxedema)
- Macroglossia, hoarse voice
Cardiovascular
- Bradycardia, pericardial effusion, hypertension (diastolic)
Neurological
- Slow reflexes (delayed relaxation phase — hallmark)
- Carpal tunnel syndrome, depression, cognitive slowing
Reproductive
- Menorrhagia, infertility, hyperprolactinemia
Metabolic
- Hypercholesterolemia, hyponatremia, elevated CK
Diagnosis
| Test | Finding |
|---|---|
| TSH | ↑ (primary hypothyroidism) |
| Free T4 | ↓ |
| Anti-TPO antibodies | ↑ in Hashimoto's |
| Lipid profile | ↑ Total cholesterol, ↑ LDL |
TSH is the single best screening test.
Treatment
(Harrison's, p. 10707)
- Levothyroxine (LT4) — synthetic T4, first-line
- Starting dose: 25–50 µg/day (lower in elderly/cardiac patients)
- Titrate every 6–8 weeks based on TSH
- Target TSH: 0.5–2.5 mIU/L
- Subclinical hypothyroidism (TSH elevated, normal T4):
- Treat if TSH >10 mIU/L, pregnant, or wishing to conceive
- Monitor annually if TSH <10 mIU/L and asymptomatic
Myxedema Coma (Severe/Decompensated)
- Life-threatening emergency
- Features: hypothermia, altered consciousness, hypoventilation, bradycardia
- Treatment: IV T3/T4 + IV hydrocortisone (rule out adrenal insufficiency first), ICU care
Hair Changes in Hypothyroidism
Connecting back to your previous question — hypothyroidism also causes hair changes:
- Diffuse hair loss (telogen effluvium)
- Hair becomes dry, coarse, brittle
- Loss of outer third of eyebrow (Queen Anne's sign)
These differ from the crinkly/kinky hair of copper deficiency — hypothyroid hair is dry and thinning, not structurally twisted.
This is a shared conversation. Sign in to Orris to start your own chat.