“Akinetic keratosis is a rare, noncancerous skin condition characterized by persistent, scaly patches that do not regress spontaneously. It is often associated with chronic sun damage and may resemble actinic keratosis (AK) or keratoacanthoma (KA) in appearance, but it is distinct in its lack of spontaneous regression.”

The Skin Cancer Foundation (ps://www.skincancer.org/skin-cancer-information/actinic-keratosis/actinic-keratosis-warning-signs-and-images/)

Keratoacanthoma is a fast-growing, dome-shaped skin bump that can mimic squamous cell carcinoma and is usually treated as if it were cancer.

Cleveland Clinic (Keratoacanthoma: Symptoms, Causes & Treatment)