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The most frequent causes
Dry skin is often accompanied by intense itching all over the body. It can occur in winter or in dry climates. It’s even more common in old age due to sagging skin and stress. So far, itching in various parts of the body isn’t a cause for concern.
If the itching is accompanied by a rash —a very intense, bright red rash—with abrasions, burning, and persistent redness, the problem may be more complex. Typically, these red spots on the skin appear without itching.
Fungal and bacterial diseases (impetigo, folliculitis, candidiasis) often cause itching, as do bites from mites, spiders, mosquitoes, and other parasites . Lice can cause intense itching of the scalp or pubic area.
Eczema, or atopic dermatitis , is primarily dermatological in nature . It presents with dry skin, scaly patches, and a bumpy rash. It’s still unclear what causes the itching and why it’s common in children, although some studies have shown a genetic link. Itching from contact dermatitis is caused by a reaction to an allergen that touches the skin.
To understand the cause, a thorough examination by a dermatologist is necessary , who will identify the elements and components that trigger the itching. Common elements include nickel, certain chemicals in cosmetics, certain detergents, and costume jewelry.