The words, purulence and suppuration also refer to the production of pus or containing pus. The word pyogenic means the formation of pus. When pus become localized to an area secondary to tissue disintegration, it forms an abscess. Dermatitis is inflammation of the skin, and is sometimes called eczema. Hair acts as a protector of the scalp, eyes, nostrils and external canal of the ears from various injuries, dust and insects.
Hair also form in the pubic, genitalia and armpit or axilla.
The word axilla means armpit. The axillary region is the area pertaining to the armpit. The oily substance secreted by the sebaceous gland is sebum . These glands are prevalent on the scalp, face, at the opening of the ear, mouth, nose, external ear, anus, upper back and scrotum. They protect and prevent the hair from drying.