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Symptoms and Signs – Differential Diagnosis of Alopecia
Non-scarring
Traction, trichotillomania
Telogen effluvium: transitory j in number of hairs in resting phase of the hair growth cycle, associated with stress, (e.g. surgery, febrile illness, childbirth, etc.)
Nutritional deficiency (iron, zinc, biotin, caloric deficiency)
Endocrine diseases (hypopituitarism, hypo/hyperthyroidism, diabetes mellitus)
Drugs (cytotoxics, ciclosporin, OCPs, anticoagulants, antithyroid drugs, vitamin A/ retinoids)
Cutaneous diseases (e.g. psoriasis, eczema)
Congenital
Alopecia areata
Aging (male/female pattern baldness)
Scarring
Infection: pyogenic infection, TB (lupus vulgaris), syphilis, viral (varicella, herpes simplex), fungal (e.g. ringworm), protozoa! (Leishmaniasis), leprosy
Inflammatory disease: SLE, scleroderma, sarcoidosis
Skin disease: lichen planus, cicatricial pemphigoid, necrobiosis lipoidica, folliculitis decalvans
Trauma/burns
Non-scarring
Traction, trichotillomania
Telogen effluvium: transitory j in number of hairs in resting phase of the hair growth cycle, associated with stress, (e.g. surgery, febrile illness, childbirth, etc.)
Nutritional deficiency (iron, zinc, biotin, caloric deficiency)
Endocrine diseases (hypopituitarism, hypo/hyperthyroidism, diabetes mellitus)
Drugs (cytotoxics, ciclosporin, OCPs, anticoagulants, antithyroid drugs, vitamin A/ retinoids)
Cutaneous diseases (e.g. psoriasis, eczema)
Congenital
Alopecia areata
Aging (male/female pattern baldness)
Scarring
Infection: pyogenic infection, TB (lupus vulgaris), syphilis, viral (varicella, herpes simplex), fungal (e.g. ringworm), protozoa! (Leishmaniasis), leprosy
Inflammatory disease: SLE, scleroderma, sarcoidosis
Skin disease: lichen planus, cicatricial pemphigoid, necrobiosis lipoidica, folliculitis decalvans
Trauma/burns
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