These are flesh-colored, pearl-like, pink skin patches or bumps. Without treatment, they may progress to squamous cell carcinoma. These are dry, scaly, pre-cancerous skin patches. In rare cases, skin cancer can cause patches of discoloration. It often occurs in areas where the skin folds, such as the armpits and groin. This is a fungal skin infection that causes red, itchy skin patches. Ringworm can appear on most parts of the body, including the scalp, groin, feet, hands, and nails. ![]() These patches may be scaly, dry, or itchy. Also known as tinea, this is a fungal skin infection that causes red or silver ring-shaped patches of skin. Tinea versicolor tends to affect the trunk, neck, and upper arms. These patches usually develop slowly and can sometimes merge to form larger patches. This is a fungal skin infection that can cause patches of skin to become lighter or darker. The cause of eczema is unclear, but it can run in families and is more common in people who have asthma, hay fever, and other allergies.Ĭertain skin infections may also cause discoloration, such as: ![]() These patches may sometimes ooze and then form a crust. Also known as atopic dermatitis, this condition can cause patches of red skin that is also itchy, dry, and cracked. This rash happens when the skin reacts to an irritant or allergen. Doctors believe that psoriasis may result from a problem with the immune system. This is a skin condition that causes silvery-red, crusty, flaky patches of skin, which can appear anywhere on the body. It typically affects the forehead, cheeks, and nose. This is a chronic skin condition that can cause raised patches of red skin and pus-filled lesions. Some types of skin rash can also cause patches of discolored skin. Albinism is a genetic disorder, meaning that a person inherits a faulty gene from one or both of their parents. This leads to little or no pigment in the skin, hair, or eyes. People with albinism do not produce enough melanin. This is a temporary increase or decrease in skin pigment following skin trauma, such as a blister or burn.Īlbinism. Post-inflammatory hyperpigmentation or hypopigmentation. The exact cause of vitiligo is unknown, but a problem with the immune system may be responsible. Sometimes, it will also change a person’s hair color. It causes the cells that produce melanin, known as melanocytes, to stop working correctly, which results in patches of lighter skin. This disease can affect any part of the body. Triggers of melasma can include sun exposure and hormonal changes. This is a common skin condition that usually affects facial skin and causes brown patches. Type of skin pigmentation disorder include: If a person has lighter or darker skin patches, this may signify a skin pigmentation disorder. Café-au-lait spots are often oval-shaped and may fade as the child grows. These appear as light brown skin patches on light skin or black coffee-colored patches on dark skin. However, it is best to see a doctor if a mole changes shape, size, or texture. These are black or brown spots that are usually harmless. Mongolian blue spots often fade as the child grows. Babies with darker skin are more likely to have these birthmarks. These are blue or gray patches that may be present on the back and buttocks at birth. They result from a problem with the melanin in the skin. Pigmented birthmarks are generally white, brown, blue, or gray. Some port wine stains may require treatment, which might include laser treatment or cosmetic camouflage. This is a noticeable flat red or purple birthmark. Up to 40 percent of all babies are born with this type of birthmark. Also called a nevus simplex, this flat red or pink patch of skin typically occurs on the neck or forehead. A strawberry nevus does not usually require treatment. It appears as a red patch and is most common on the face, scalp, chest, and back. ![]() Also called a hemangioma, this is a common type of vascular birthmark. Vascular birthmarks are red, and they occur due to abnormal blood vessels in the skin. Some types of birthmark fade over time, while others may be permanent.īirthmarks are either vascular or pigmented. Birthmarksīirthmarks are patches of discoloration that people have when they are born. We look at each one of these in more detail below. Share on Pinterest Michael Kuby/EyeEm/Getty Imagesĭiscolored skin patches have many different causes, including:
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