Defective nutrition or growth of hair, often culminating in alopecia. May be acquired or congenital; the latter often with metabolic or other birth defects.
[tricho- + G. prefix dys-, abnormal, + trophē, growth]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Hair loss is caused by a variety of factors: hereditary (trichodystrophy, androgenic alopecia), concomitant medical conditions, hormonal disorders (thyroid gland disorders, insulin resistance), autoimmune (patchy alopecia, systemic lupus erythematosus), nutritional disorders, environmental factors (medicines, UV radiation), psychological factors (stress, trichotillomania), and ageing.