Most people can recognize and diagnose acne themselves.
Acne is a kind of catch-all term that basically refers to eruptions on the skin that are caused by the effects of hormones on sebaceous glands.
The face and upper neck are the most commonly affected, but the chest, back and shoulders may have acne as well.
The upper arms can also have acne, but lesions found there are often keratosis pilaris.
About 85% of all teenagers will have acne to some degree.
  A teenage body is suffused in raging hormones, and those hormones are responsible in a large part for acne.
There are treatments today for teenage acne that can help keep the acne under control.
It's very important to keep their faces clean.
Bar soaps or washes may be used and vary from 2 to 10% in strength.
Built-up oil of the skin can block the passages of these pores, so standard washing of the face could wash off old oil and help unblock the pores.
Clean your face at least twice each day, morning and evening.
The other thing that can be done that will help to prevent acne is eating a healthy diet.
Food cannot cause acne outbreaks but the lack of certain nutrients can.
Take foods that are high in zinc such as brewers yeast, whole grains, Brazil nuts, and pumpkin seeds, as zinc gluconate has been shown to be effective in the treatment of inflammatory acne.
It is widely accepted as fact that one the most important factors in fighting acne is complete and correct facial cleansing twice daily, along with good balanced diets.