Medically reviewed by Simone Harounian, MS Hypothyroidism, or underactive thyroid, occurs when the thyroid gland doesn't ...

Having asthma, Hashimoto’s thyroiditis or atopic dermatitis in addition to alopecia areata raised the odds for early-onset, severe and prolonged alopecia areata, according to a research letter ...

Dark underarms may simply have to do with pigmentation and levels of melanin in the skin. But sometimes armpit discoloration ...