Scalp biopsies can be used to make or confirm a diagnosis of alopecia and can be essential in guiding therapy. A four millimeter punch biopsy which includes subcutaneous fat is needed to ensure ...

Medically reviewed by Katlein Franca, MD There are many different types of eczema, one type is called seborrheic dermatitis, ...

Because only anagen hairs elongate (1 cm/mo on the scalp) while telogen hair does not ... are not sufficient to pinpoint the disease, a biopsy may offer valuable information.