My son has a skin rash what could it be?

Many possibilities: Kids get rashes as allergic reactions, after illnesses, to contact with various plants or lotions etc.The possibilities are endless.A more descriptive set of info might help, but rashes are very visual and perhaps your local doc should see it and comment.

Many possibilities: There are many types and causes of skin rashes. Several types of inflammatory conditions of the skin, allergic reactions, and sometimes bacterial, viral or fungal infections can cause rashes on the skin. Insect bites can also be the cause of a rash on the skin. Have it evaluated by a professional and get the appropriate treatment.