Term
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Definition
| Most common form of hair loss. Nonscarring, progressive, gradual. Genetic predisposition combined with action of adrogens. In women, check for diseases related to excess androgens. Fine hair. Treat with minoxidil solution. |
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Term
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Definition
| Recurrent, non-scarring hair loss. Can occur on any hair baearing area. Focal areas of smooth hair loss. May have nail pits. |
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Term
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Definition
| Loss of all scalp hair. Form of alopecia areata. |
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Term
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Definition
| Loss of all body hair. Form of alopecia areata. |
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Term
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Definition
| Reversible, non-scarring. Diffuse loss of mature, terminal hairs. Caused by physiologic stress or hormonal change. Large number of hairs enter the telogen phase at once. The interval between the inciting event and the onset of hairloss is 1-6 months. Pregnancy, meds, trauma. |
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Term
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Definition
| Hair loss due to mechanical traction or chemical trauma. Tight braids, chemical hair straighteners, buns. Conversion from anagen to telogen (mechanical traction). Disruption of keratin structure reduces tensile strength (chemical trauma). |
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Term
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Definition
| Nervous hair pulling. Self induced psychiatric disorder. History is vague. Can be focused (intentional) or nonfocused (habitual). Bizarre, asymmetric, irregular broken hairs. |
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Term
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Definition
| Inflammatory cells w/i the hair follicle. Secondary to infections, trauma, occlusion. Itchy, mild discomfort. Hot tubs = P. aeruginosa. Sweating, friction, obesity, shaving . Multiple small erythematous papules/pustules. Clustered, favors hair-bearing regions. If chronic check for S. aureus colonization. |
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Term
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Definition
| Deep inflammatory nodule involving hair follicle. Usually occurs after folliculitis. Caused by S. aureus, friction and perspiration. Nodular, very painful, drains pus. No systemic symptoms. |
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Term
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Definition
| Series of abscesses in subcutaneous tissue that drain via the hair follicles. Caused by S. aureus, friction, perspiration. Nodular, very painful, drains pus. Fever. |
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Term
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Definition
| Androgen-dependent terminal body hair on lip, chin, chest, abdomen and back in women. With virilization check for PCOS, ovarian/adrenal tumors. Without virilization can be idiopathic, familial. Common in Mediterranean, Middle-Eastern and East Indian women. |
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Term
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Definition
| Excessive hair growth beyond normal limits. Rare, congenital or acquired. Lanugo, vellus or terminal. Spares palms/soles. Drug induced, hypothyroid, anorexia nervosa. |
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Term
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Definition
| Foreign body inflammatory reaction. "Razor bumps" or "Ingrown hairs". Sharp, pointed end of hair reenters a short distance away. Firm papules, erythematous, hair shaft in center. Pustules due to secondary infection. Treatment: shower before shaving, avoid close shave, wash with toothbrush in circular motion. |
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