What could be the cause of a highly itchy, spreading red rash that originated on the hands and has now expanded to the legs, chest, stomach, and back, and is the current treatment of oral antihistamines and topical corticosteroids appropriate for managing it?
It is common for contact dermatitis or an allergic reaction to start on the hands and trigger a wider response across the body. Your current treatment of oral antihistamines and topical corticosteroids is highly appropriate, as they are standard therapies to reduce inflammation and soothe the intense itching. Because the rash is spreading to larger areas like your chest and back, please consult a healthcare professional. They can confirm the trigger and ensure you have the correct strength of medication. Please seek immediate care if you develop any difficulty breathing, facial swelling, or a fever.
