<s>[INST] HI, I have a dermatological question.  When exposed to sunlight, I get rashes on my hands that a itchy and look like tiny raised bumps.  This only happens in the summer.  On my face, I do not get the bumps/itchy rash but I do get a swollen tender nose.  I have used strong hydrocortizone (oral and topical) and antibiotics that havent really helped.I have tried using sun block, but it darkens my skin.  Please let me know what preventative measures I can take and if there is a remedy for this problem.  I am of south Asian decent.Thank you for your help. [/INST] Hi and thanks for the query, The clinical scenario presented raises instead allergic or inflammatory concerns rather than infectious concerns. It might not be very useful to use antibiotics since the cause is not for sure infectious. A complete clinical review by a dermatologist is important. Blood Immunoglobulin E levels, serum C3 and C4 levels, Anti-nuclear antibody testing and HLA27 are important to screen for common autoimmune conditions and hypersensitivity conditions. Consult your doctor for a proper review and testing. Kind regards, Bain LE, MD. </s>