What are some good ways to relieve eczema pain?

Managing eczema: Eczema is in the same family of conditions as allergies and asthma. It can't be cured but usually can be controlled. It is best managed by using a sensitive skin cleanser, avoiding bathing in very hot water, and using a sensitive skin lotion at least 3 times daily, even when the rash isn't there. If doing this doesn't help enough, please see the doctor.

Pain or itchiness?: Usually eczema rashes r very itchy. For that, u can try antihistamine pills, topical medicine, and moisturizers. When it is bad, an allergist or dermatologist can help u developing a comprehensive treatment plan. If the rash is literally "painful", it may be infected. U need to see ur doctor.