The diagnosis of actinic keratosis is usually made clinically.
Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics – for differential diagnosis.
- Dermatoscopy (reflected light microscopy; increases diagnostic confidence).
- Fluorescence diagnostics (FD; synonym: photodynamic diagnostics, PDD); for in vivo diagnosis of non-melanocytic tumors such as basal cell carcinomas or squamous cell carcinomas of the skin, as well as precancerous lesions (precancerous lesions) such as actinic keratosis
