cause of hair loss
1 Traumatic alopecia â This form of hair loss is caused by hairdressing techniques that pull the hair (tight braiding or cornrowing), expose hair to extreme heat and twisting (curling iron or hot rollers) or damage the hair with strong chemicals (bleaching, hair coloring, permanent waves).
When hair loss is the result of telogen effluvium or medication side effects, the hair loss usually is all over the head, while in tinea infections and alopecia areata, the hair loss occurs in small patches. Also, tinea infections can cause additional symptoms, such as scaling of the scalp or areas of broken hairs that look like black dots.