At the edge of Israel's Dead Sea, there are a group of resorts that cater to psoriasis patients by offering a combination of graded solar exposure and the application of crude coal tar along with a spa-like experience. The Dead Sea is the lowest point on earth, more than 400 meters below sea level. Once the sun's rays pass through the haze, the harmful ultraviolet rays are filtered out and the remaining rays are highly effective in treating psoriasis. For those with the time and the money, this is a reasonable alternative to standard medical treatment.
Use warm water or a squirt bottle to clean the irritated diaper area at every change, and let your child's bottom air out whenever possible. Before diapering, apply a thick coating of a zinc oxide-based cream to protect the rash from further moisture, which can make the rash even worse. You can also ask your doctor for advice about using a mild, topical steroid cream for more severe cases. If you suspect a yeast infection, see a doctor, who can prescribe an anti-fungal cream like over-the-counter clotrimazole (Lotrimin) or prescription nystatin to apply at every diaper change until the rash disappears. If your child has rashes in the diaper area that don't respond to conventional treatments, see your doctor to make sure the rash isn't related to another condition.