Carrillo ER, Carrillo CJR, Carrillo CLD

Language: Spanish
References: 19
Page: 294-298
PDF size: 376.61 Kb.

ABSTRACT

Hair is a product of hair follicles. The most important feature of hair follicles is that their activity is intermittent; each active phase or anagen is succeeded by a transitional phase or catagen and a resting phase, telogen, during which the fully formed “club hair” is retained for a period and then shed. Some hair loss from the scalp can be characterized in terms of the hair growth cycle. Postinfectious and postpartum alopecias are telogen effluvia that involve shedding of club hairs, whereas drug-induced alopecia and alopecia areata involve shearing and loss of growing hairs. The term telogen effluvium, first coined by Kligman in 1961, refers to the loss of telogen hair in disease states. To establish the cause of the hair loss secondary to telogen effluvium, one requires a history to identify known triggers, biochemical investigations to exclude endocrine, nutritional or autoimmune aetiologies. Clip and pull tests and microscopic hair analysis are a simple and fast diagnostic tests that can be done to do diagnostic. Scalp biopsy is indicated in special cases. In most cases of telogen effluvium regrowth of hair is complete with appropriate treatment.

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