Stages of Actinic Keratosis
Actinic keratoses (AKs) are pre-malignant skin lesions that develop in areas of skin that have been exposed to the sun over a long period of time. They can range in size from very small to large, and can be found on the face, scalp, neck, arms, hands, and other areas of the body that are exposed to the sun.
Stage I: At this stage, the lesion is usually small and may appear as a rough, scaly patch on the skin. It is often painless and can be easily mistaken for dry skin.
Stage II: At this stage, the lesion may be slightly larger and may have a slightly raised or bumpy appearance. It may also start to itch or become tender.
Stage III: At this stage, the lesion may be larger and more raised with a clearly defined border. It may also be darker in color than surrounding skin.
Stage IV: At this stage, the lesion may be quite large and may have a thickened, crusty surface. It may also be red, pink, purple, or brown in color.
Stage V: At this stage, the lesion may have grown into a nodule or mass. It may be quite large and may be red, pink, purple, or brown in color.