Most people experience a phase where excessive hair loss occurs unexpectedly. Such phases are referred to as alopecia diffusa or effluvium. Hair loss affects the whole scalp and not just patches as is the case with alopecia areata. In such a case, the number of hairs in the resting phase is higher than usual. The scalp generally shows no sign of a rash, scaling or inflammation. The causes of alopecia diffusa are not necessarily connected with the skin, but can for example be connected with a metabolic disorder. A thyroid disorder, the use of medicines in high doses, such as vitamin A and retinoids (medicines derived from vitamin A and used in the treatment of leukaemia), iron deficiency (due for example to a strict slimming diet), stress, significant vitamin deficiency, certain medications and even pregnancy are all possible causes of alopecia diffusa. Hair loss can continue 3 - 4 months after the disappearance of the disorder. Alopecia diffusa treatment targets the causes: adjusting medication, improving eating habits or avoiding contact with certain substances.
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