Itchy skin that turns red when scratched can be caused by a variety of factors, from simple climate-related dryness to a detergent or soap allergy. Fortunately, skin itching can often be alleviated with inexpensive over-the-counter or home remedies. Itching and redness that does not abate with a change of cleansers, moisturizer or anti-itch cream may necessitate a visit to a dermatologist.
Dry Skin
One possible cause of skin itching is dryness related to weather or exposure to the elements. According to the University of Iowa Hospitals and Clinics, exposing skin to harsh cleansers, hot or soapy water, or extreme hot or cold weather can deplete protective skin oils. If your skin becomes too dry, the redness and itching may be because of a resultant case of dermatitis, which can become quite painful if not treated. Use lotion and sunscreen to moisturize your skin and protect it from damaging ultraviolet rays.
Dermatitis
Dermatitis is a catchall term for rashes caused by irritation. Contact dermatitis may be because of soap, laundry detergent or fabric softener. Atopic dermatitis is common in dry climates, while seborrheic dermatitis sometimes plagues parts of the body rich in oil-producing sebaceous glands. Lack of B vitamins or too much vitamin A can bring about symptoms of dermatitis, such as itching and redness.
Eczema
Eczema, another cause of skin redness and itching, is believed to be an immune system disorder. Eczema leaves your skin dry, rough, flaky and often quite itchy. Red blotches caused by eczema may later turn dark brown. If you do not properly treat a case of eczema, your skin may crack and break, leaving it vulnerable to bacterial infection. According to MayoClinic.com, eczema may be accompanied by allergies or asthma, and usually first presents in childhood, though rare cases do crop up initially in adults. The arms and legs are the parts of the body most commonly affected by eczema.
Psoriasis
Psoriasis causes a rapid buildup of dry, dead cells that develop a scaly appearance. Psoriasis is a chronic condition that may be accompanied by arthritis. Those suffering from psoriasis may experience thickening of the fingernails and joint stiffness. Outbreaks can occur for weeks or months on end, then cease for a while before ultimately returning. Psoriasis outbreaks occur when T lymphocyte cells, which usually attack viruses in the body, turn on healthy skin cells instead, notes MayoClinic.com. Stress and certain prescription medications, such as lithium and beta blockers, may make psoriasis symptoms worse. Skin may turn red in patches that are covered with silvery scales, and may also itch.
Prevention/Solution
Treating itchy skin may require an over-the-counter cortisone cream or gel. Taking lukewarm showers, avoiding long hot baths and choosing moisturizing shower gel over regular soap can help relieve dryness and redness. Always slather on lotion after showering, preferably an unscented formula made for sensitive skin. Colloidal oatmeal compresses or body wash can help relieve severe itching. Cortisone or anti-fungal treatments may be necessary for red, itchy skin that is not helped by regular moisturizing.
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