The University of Maryland Medical Center defines contact dermatitis as inflammation caused by skin contact with an irritating substance. A common symptom of contact dermatitis includes severe itching. The syndrome may be caused by allergies to poison ivy or other poisonous plants, nickel, latex, rubber and even some medications. According to the medical center, the allergic reaction is often delayed after exposure and a rash commonly appears 24 to 48 hours after exposure. A variety of treatments may decrease itching associated with the condition.
Cold Compresses
Cool compresses applied to the skin soothe and relieve skin of itching. Skin rinsed with cool water, either from a faucet or an outdoor stream, aids in itch relief and may remove the irritating substance. Skin exposed to warm water may open pores and cause the irritating substance to further enter the skin. Ice cubes, cold wash clothes or gauze may be used to create a cold compress. Apply as needed.
Medications
According to the National Asthma and Allergy Association, contact dermatitis is often treated successfully with over-the-counter medications. Calamine lotion forms a chalky layer over the skin irritation and decreases itching. Corticosteroid creams may also relieve itching, but are thicker in viscosity. The medication should only be applied in small amounts; more is not better, advises The University of Illinois' McKinley Health Center. Oral medications, such as diphenhydramine, decrease irritation but also cause drowsiness.
Oatmeal and Baking Soda Baths
The Cleveland Clinic recommends treating itchy contact dermatitis itch with oatmeal baths. Uncooked oatmeal added to cool bath water is beneficial to relieve itching. Colloidal oatmeal bath also relieves itching. People using oatmeal or oatmeal bath products should stir bath water well while adding oatmeal. The bottom of the tub may become slippery; a person should carefully enter and exit the bathtub. Bathing for 15 to 20 minutes daily is recommended or twice a day. If oatmeal is not available, baking soda also may be beneficial. If a person is unable to take a full bath, a paste made from baking soda or oatmeal and allowed to dry on the skin may also relieve itch associated with contact dermatitis.
