No one knows exactly what causes acne. Hormone changes might play a role. There is little evidence that foods like chocolate and greasy foods have much effect on acne in most people. Another common myth is that dirty skin causes acne; however, blackheads and pimples are not caused by dirt. Stress doesn't cause acne, but stress can make it worse. To treat acne, your son can:

* Clean his skin gently
* Try not to touch his skin
* Avoid the sun

Treatments for acne include medicines and creams. He can ask for help from a dermatologist in order to diagnose the cause of the acne. If it's a hormonal problem, he might be able to take medications which will make the spots go away.