Actinic Keratosis
Pronunciation: ak-TIN-ik ker-ah-TOH-sis
A rough, scaly lesion on sun-damaged skin representing a pre-malignant change in keratinocytes, commonly addressed in cosmetic dermatology as part of a broader skin health program.
Full Definition
Actinic keratoses (AKs) arise from cumulative ultraviolet radiation exposure causing dysplastic keratinocyte proliferation in the epidermis. While regarded as pre-cancerous rather than cosmetic in strict medical terms, they are routinely managed within cosmetic dermatology settings alongside photoageing concerns. Treatment modalities include cryotherapy, photodynamic therapy (PDT), field-directed topical agents (e.g., 5-fluorouracil, imiquimod), and ablative lasers. Editors must not confuse AK with seborrhoeic keratosis; the former carries malignant potential and the distinction has significant medicolegal weight in consent documents and clinical records.
Usage
Usage note: Do not describe AKs as benign in clinical or consent documents; they carry pre-malignant potential. Distinguish clearly from seborrhoeic keratosis. Plural: actinic keratoses.
In Context
- "Field therapy with 5-fluorouracil cream was prescribed to address multiple actinic keratoses across the scalp." — Clinical treatment plan
- "The consent form incorrectly referred to actinic keratoses as benign growths; this was flagged as a clinically inaccurate statement requiring revision." — Legal-clinical document review