Hair Loss : Tests and Diagnosis

Doctor performs blood tests to determine the medical condition that causes the hair loss ,such as thyroid disease, diabetes,or lupus.
During the pull test ,hairs are gently pulled to see how many comes out.It helps to determine the stage of the shedding process of hair.scraping samples taken from the skin or few hairs plucked from the scalp can help to verify whether an infection is causing hair loss.
if diagnosis is difficult to confirm, then doctor may perform a punch biopsy.During this test ,the doctor uses a circular tool to remove a small section of skin deeper layers.

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