Seborrheic keratosis is a non-cancerous lesion of skin seen mostly in elderly patients. This condition is characterized by the presence of hyper-pigmented lesions of brown, black or light tan color. The lesions are slightly elevated and scaly. They are clinically diagnosed by their “stuck on” appearance. Picture credit: https://www.mayoclinic.org/diseases-conditions/seborrheic-keratosis/symptoms-causes/syc-20353878