Waiting times information is also used locally in the. management of elective surgery. National data on elective surgery waiting times includes data on the clinical urgency of the. patient, that is, on how quickly the patient should have surgery.
These areas of skin have the most oil (sebaceous) glands. Acne occurs when hair follicles become plugged with oil and dead skin cells. Hair follicles are connected to oil glands. These glands secrete an oily substance (sebum) to lubricate your hair and skin.
Why does it occur. Acne occurs when glands (called sebaceous glands) in the follicles of the skin become overactive. These glands produce sebum, an oily substance that helps to stop the skin drying out.Someone with acne produces too much sebum, which forms a plug with dead skin cells and blocks the follicle.If the blocked follicle is close to the skin surface, it balloons outwards and forms a whitehead.everal factors can cause acne to get worse: 1  Changing levels of hormones in teenage girls and women, usually two to seven days before their period starts. 2  Oil from skin products, such as moisturisers and make-up, or grease in the workplace (such as a kitchen with fryers).