Many types of benign (non-cancerous) tumors can grow on the skin. The term acne refers to not only pimples on the face, but blackheads, cysts, and nodules as well. About 30 percent of the population has moles called dysplastic nevi, which are larger than ordinary moles—most are 5 mm across or larger, have irregular borders, and are various shades or colors. The most common causes of skin blemishes include heredity, hormone fluctuations, dietary habits, and environmental factors. Skin changes with age are common for most people. While blackheads pop up when your pores are just a little blocked, whiteheads appear when there's a total block. These are usually harmless but may sometimes get irritated or be aesthetically unappealing. Treating blemishes can be accomplished with several options depending on the exact type of skin … Some types of skin blemishes result from the natural aging process as well. Not all red skin spots are caused by acne. Atrophy is thinning of the skin that can sometimes result in a depression and often has a dry and wrinkled "cigarette paper" appearance. It is not uncommon for a variety of different marks, such as moles and freckles, to develop as a result of sun exposure too. As with all the different kinds of blemishes, a combination of dirt, dead skin cells, oil, and other debris fill the affected pore or pores, resulting in a white-colored head. Bullae are clear fluid-filled blisters that are greater than 10 millimeters (0.4 inch) in diameter (larger than vesicles). They can be removed, if necessary. 10. Some people get acne on other parts of … Lemon juice works as a bleach on the skin, lightening scars, blemishes, and also your skin tone . Seborrheic Keratosis, sometimes called senile wart, is a non-cancerous condition that occurs as a light brown, black or tan growth on the surface of the skin. Although most moles are benign, certain types of moles carry a higher risk for melanoma. Some more serious conditions, like staph infections and skin cancer, can also look like pimples. A lipoma is a fatty deposit underneath the skin that might feel like a cystic pimple. 11 They consist of blue, gray-blue (Figure 13), or brown-blue papules (Figure 14) that occur most commonly on the head and neck. Caution. Back To TOC. Blue nevi are a manifestation of dermal melanocytosis. When a protein called keratin plugs up your hair follicles, you can get small pointed pimples on your skin, a condition called keratosis pilaris. They do not usually cause serious problems. Crusts (scabs) are dried blood, pus, or … Many other skin conditions can result in bumps that look like normal blemishes. Visit Insider's homepage for more stories. If you have sensitive skin, dilute lemon juice with an equal amount of water before applying it. Common types of benign (non-cancerous) skin growths. 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