Hello Rama Krishna Garu, Homeopathy have very effective medicines to treat your problem of photodermatitis. May i know since how long are you suffering from this??Do you have any reports regarding this? Photodermatitis is a skin disorder where the skin abnormally responds to the sunlight, especially UV rays. which leads to the symptoms like rash  on skin, which is very itchy, burning, swelling, darkening of skin etc..The cause might be chemicals, medicines like antibiotics, anti diabetic drugs, coal tars, vitamin B3 deficiency etc…You need to take treatment for at least course of time and for more detailed information contact us on :9515869820