Caused by an overactive immune system, eczema is an inflammation of the top layer of the skin. It presents as dry, red, itchy rash. Cortisone is often prescribed by doctors in topical form to add moisture and calm the skin irritation. Available in over-the-counter or prescription form, cortisone for eczema works by suppressing the immune system, and is one of the most common treatments for eczema. Cortisone for eczema is an effective treatment to alleviate symptoms and outbreaks, but it will not cure the eczema, which will return as soon as the cream is stopped.

Medical experts don't know exactly what causes eczema, but it is assumed to be caused by an overactive immune response. Allergies, asthma or other irritants cause the skin to become thicker in some areas, with blistering, flaking, crusting and oozing. Eczema is extremely irritating and itchy, causing dry, red patches that may appear anywhere on the skin. Exposure to some household products may cause the condition to worsen. Sometimes, exposure to extreme temperatures or new climates may cause an outbreak. Most patients report that cortisone cream is highly effective in relieving the itch that accompanies eczema, but unless the underlying cause is found and eliminated, the cream will only relieve the symptoms, not cure the problem.

Eczema is treated by attempting to relieve the itching to avoid infection and make the sufferer more comfortable. Most doctors will recommend over-the-counter cortisone for eczema treatment. Cortisone will keep the skin moist. It improves the itching because it contains steroids. A prescription for a stronger cortisone for eczema has larger amounts of steroids, and should be used sparingly due to possible side effects that have been associated with steroid treatments.

When using cortisone for the treatment of eczema, the patient should apply the product immediately after bathing, while the skin is still slightly moist for maximum effectiveness. Although it can present itself anywhere on the sufferer's body, eczema is most commonly found on the face, hands or feet. Cortisone cream, lotion or ointment should be applied in small amounts, and worked into the skin. It should be followed by a good-quality body cream or lotion to keep the area as moist as possible. Cortisone sprays are useful for the scalp, to keep the scalp moist, while preventing the hair from becoming greasy. Cortisone is most effective when it applied to damp skin, rubbed in, and followed up with a good-quality cream.

Side effects that have been reported when using cortisone for eczema include spider veins, thin skin, glaucoma and cataracts. These side effects are associated with large quantities of the stronger prescription doses. It is important not to use high quantities of prescription cortisone for eczema. When used sparingly, cortisone is an appropriate choice in the treatment of eczema and should cause little or no side effects. Generally, the stronger cortisone creams are used for a short period of time, then the patient will use the lower-strength varieties for every day use.