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698 Possible Causes for Dark Skin Pigmentation, Square Prognathic Jaw

  • Sunburn

    The body protects itself from this harmful radiation by accelerating the production of melanin, the dark pigment that gives skin its normal color.[] A dark pigment called melanin. It’s produced by cells in our skin, and serves to absorb any UV light and transform it into heat.[] Melanin is the skin's protective coloring (pigment).[]

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  • Hypohidrotic Ectodermal Dysplasia

    Craniofacial defects: Frontal bossing, square jaw, mandibular prognathism, maxillary retrusion, dolichocephaly.[]

  • Polycystic Ovary Syndrome

    The pigmentation and skin texture changes can also appear under your arms and around the vulva. 5. Your belly is getting bigger and you don't know why.[] Laser therapy destroys hair by targeting the pigment (melanin) in the hair follicle and is ideally suited for dark-haired, light-skinned individuals.[] "It's a velvety, dark discoloration that doesn't wash off," explains Siddiqui.[]

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  • Liver Cirrhosis

    The same bile pigment, bilirubin, which is responsible for the yellow skin tones of jaundice can turn urine dark.[] Jaundice is a yellow discoloration of the skin and whites of the eyes due to abnormally high levels of bilirubin (bile pigment) in the bloodstream.[] As the disease progresses, bile flow is blocked or stopped, and jaundice (yellow skin or eyes) appears.[]

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  • Skin Cancer

    Malignant Melanoma Melanoma has its beginnings in melanocytes, the skin cells that produce the dark, protective pigment called melanin which makes the skin tan.[] Telangiectasias and a pearly, rolled border in dark skin or in a pigmented tumor may be difficult to discern.[] skin pigmentation, and children with many other conditions. 67, 71, 72 The benefits of vitamin D sufficiency in adults include improved bone health, prevention of fractures[]

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  • Varicose Veins

    Sometimes you will notice a dark pigment forming on the lower legs or a congested purple appearance of the feet at the end of the day.[] Other symptoms can include ankle swelling, restlessness in the legs, cramp, itching, or a red rash (‘varicose eczema’) on the skin of the legs.[]

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  • Malignant Melanoma

    Melanoma begins in melanocytes, the skin cells that produce the dark protective pigment called melanin that makes the skin tan.[] Melanoma comes from skin cells called melanocytes. These cells produce melanin, the dark pigment that gives skin its color.[] Melanin is the dark pigment that gives the skin its natural colour. Melanin is made in the skin by pigment cells called melanocytes.[]

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  • Addison's Disease

    Even people with dark skin can develop excessive pigmentation, although the change may be harder to recognize.[] ) skin, and dark freckling.[] Corticotropin also stimulates melanin production, so the skin and the lining of the mouth often develop a dark pigmentation.[]

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  • Systemic Scleroderma

    The skin can lose or gain pigment; making areas of light or dark skin. Some people lose hair on the limbs, sweat less, and develop dry skin because of skin damage.[] Tight skin on the face can reduce the size of a person’s mouth and make good dental care very important.[]

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  • Vitamin Deficiency

    You have dark skin. The pigment melanin reduces the skin's ability to make vitamin D in response to sunlight exposure.[] People with dark skin Greater amounts of the pigment melanin in the epidermal layer result in darker skin and reduce the skin's ability to produce vitamin D from sunlight[]

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Further symptoms