Tests and diagnosis

By Mayo Clinic Staff

Your doctor can usually diagnose actinic keratosis simply by looking at it. If there's any doubt, your doctor may do other tests, such as a skin biopsy. During a skin biopsy, your doctor takes a small sample of your skin for analysis in a lab. A biopsy can usually be done in a doctor's office after a numbing injection.

Feb. 08, 2014