Epidermoid cysts, also known as epidermal inclusion cysts, are benign keratin-filled bumps, that develop under the skin and are commonly present on the face, neck, scalp, and trunk. Pilar cysts ...

Telogen effluvium. This is temporary hair thinning over the scalp that occurs because of changes in the growth cycle of hair. A large number of hairs enter the resting phase at the same time ...