Moles appear as an overgrowth over the skin. Moles are very common, and mostly make an appearance during childhood and adolescence. Warts appear as blister like infections on the skin surface and are caused by the HPV viral infection. Skin tags are technically called ‘acrochordons’ and are small tumour like growths on the skin. They generally form in areas of the skin which rub together frequently like armpits, genital area or neck. Corns form on areas on the feet where skin thickens due to application of pressure. Corns can become painful dead skin tissues in severe cases.