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A man with pellagra, which is caused by a chronic lack of vitamin B 3 in the diet. Severe deficiency of niacin in the diet causes the disease pellagra, characterized by diarrhea, sun-sensitive dermatitis involving hyperpigmentation and thickening of the skin (see image), inflammation of the mouth and tongue, delirium, dementia, and if left untreated, death. [7]
Hypervitaminosis is a condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity. Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called hypervitaminosis A.
It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (), photosensitization, [3] acute radiation syndrome, mercury toxicity, blister agents, [4] niacin administration, [5] or waxing and tweezing of the hairs—any of which can cause the affected capillaries to dilate, resulting in redness.
Does niacin affect heart health? Niacin’s relationship with heart health is a little complicated. There are prescription medications like Niaspan and its generic equivalent niacin ER that ...
Scabs and sores on your scalp can be itchy and concerning. We talked to doctors about the causes and medical treatments for scalp scabs. ... It causes itching, inflammation, a rash, cracked skin ...
Some Nioxin hair care products may relieve an itchy scalp. While an irritated or dry scalp doesn’t directly cause hair loss, itching your scalp may damage strands and contribute to brittle hair.
Additionally, the nicotinic acid form may cause vasodilatory effects, also known as flushing, including redness of the skin, often accompanied by an itching, tingling, or mild burning sensation, which is also often accompanied by pruritus, headaches, and increased intracranial blood flow, and occasionally accompanied by pain. [24]
It becomes prominent following exposure to sun, and can be itchy with a burning feeling and pain. [1] It can blister and weep, and turn into thick dark skin, with a coppery hue. [1] If prolonged, the skin becomes thin, dry and smooth. [1] The sign is caused by a lack of the niacin (vitamin B 3). [1] Seborrheic dermatitis may appear similar. [1]
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