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AK – Clinical aspects

• Ill-defined macule, papule or plaque with color ranging from skin-colored to pink to red to brown, with dry, adherent scales. • Solitary or, more frequently, multiple, and the individual size may vary from few millimeters to 1–2 centimeters. • Preferential sites: face, ears, neck, bald scalp, extensor surface of the extremities • AKs are usually asymptomatic although some patients report itching, burning or a splinter-