Discovering a mysterious rash on your skin can be frustrating and even frightening, especially when it appears suddenly and without an obvious cause. Skin rashes can vary greatly in appearanceredness, bumps, itching, dryness, or peelingand may be a result of many different conditions. Knowing the possible triggers can help identify whats going on and how to treat it.

Skin rashes with no clear cause can be difficult to manage, especially when they become chronic or recurrent. UVB phototherapy has proven effective in treating various skin conditions like eczema, psoriasis, and unexplained dermatitis by reducing inflammation and calming the immune response.