Actinic keratoses vary in appearance. Symptoms include: 
Rough, dry or scaly patch of skin, usually less than 1 inch (2.5 centimeters) in diameter
Flat to slightly raised patch or bump on the top layer of skin
In some cases, a hard, wartlike surface
Color variations, including pink, red or brown
Itching, burning, bleeding or crusting
New patches or bumps on sun-exposed areas of the head, neck, hands and forearms
