obsolete_actinic keratosis true true An actinic keratosis (ak-TIN-ik ker-uh-TOE-sis) is a rough, scaly patch on your skin that develops from years of exposure to the sun. It's most commonly found on your face, lips, ears, back of your hands, forearms, scalp or neck. Also known as solar keratosis, an actinic keratosis enlarges slowly and usually causes no signs or symptoms other than a patch or small spot on your skin. These lesions take years to develop, usually first appearing in older adults. A small percentage of actinic keratosis lesions can eventually become skin cancer. You can reduce your risk of actinic keratosis by minimizing your sun exposure and protecting your skin from ultraviolet (UV) rays. actinic (Solar) Keratosis DOID:8866 SNOMEDCT:201101007 MedDRA:10000614 Senile hyperkeratosis http://purl.obolibrary.org/obo/MONDO_0005173 Ele Holloway ICD9:702.0 SNOMEDCT:856006 Solar keratosis 3.88.0 http://www.mayoclinic.org/diseases-conditions/actinic-keratosis/basics/definition/con-20030382 actinic keratosis (morphologic abnormality) Replaced by Mondo term MONDO_0005173, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0005173 actinic keratosis (disorder) NCIt:C3148 SK - Solar keratosis James Malone Sirarat Sarntivijai