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They might be caused by skin abrasion and discomfort from tight clothing or bicycle riding. An allergic response, a chemical irritant, or a viral, fungal, or bacterial skin infection can also cause it. A rash is any spot of your skin that is itchy or inflamed. Scratching might aggravate symptoms.
It also plays an important role in neurological function, and deficiency can culminate in a range of mental health symptoms, from irritability and depression to dementia and even psychosis. For example, iodine deficiency in: Salivary glands = inability to produce saliva, producing dry mouth Skin = dryskin, and lack of sweat.
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