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Thinning hair can have hormonal causes that may arise from a temporary condition or from a long term age related changes. Temporary hair thinning may follow stress, shock, childbirth, illness or treatment with certain medicines. Stress related muscle tension tightens the scalp and prevents enough nutrient rich blood from reaching the hair follicles. The starved hair roots then shrink and the hair may fall out prematurely. Patchy hair loss may be due to fungal infection, like ringworm.

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16y ago

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