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Higher than normal insulin levels in the blood stream cause the growth of darkened skin over certain areas of the body. No skin treatment will cure it, but acanthosis nigricans may lighten up and possibly disappear by treating the root cause, insulin resistance, but it can take months or years to do so. [11]
There are also a number of other conditions that affect hands, feet, and parts of the face with associated skin color changes that need to be differentiated from acrocyanosis: Raynaud phenomenon, pernio, acrorygosis, erythromelalgia, and blue finger syndrome. The diagnosis may be challenging in some cases, especially when these syndromes co-exist.
In short, melasma is a chronic skin condition that appears as darkened areas on the face due to an overproduction of melanin, says Gina Charles, MO, a family physician specializing in skincare. It ...
Hypopigmentation (when the skin is lighter than normal) of lesions are less common but can be found in children, adolescents and/or dark-skinned individuals. [7] The advanced stage of mycosis fungoides is characterized by generalized erythroderma (red rash covering most of the body) with severe pruritus (itching) and scaling. [4]
Tinea versicolor (also pityriasis versicolor) is a condition characterized by a skin eruption on the trunk and proximal extremities. [1] The majority of tinea versicolor is caused by the fungus Malassezia globosa, although Malassezia furfur is responsible for a small number of cases.
Hyperpigmentation can be caused by sun damage, inflammation, or other skin injuries, including those related to acne vulgaris. [1] [2] [3]: 854 People with darker skin tones are more prone to hyperpigmentation, especially with excess sun exposure. [4] Many forms of hyperpigmentation are caused by an excess production of melanin. [4]
As children get older, the areas on the insides of the knees and folds of the elbows and around the neck are most commonly affected. [3] In adults, the hands and feet are commonly affected. [3] Scratching the affected areas worsens the eczema and increases the risk of skin infections. [2] Many people with atopic dermatitis develop hay fever or ...
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