Drug Rash
A skin rash can also appear as a side effect of taking a drug or due to an allergic reaction to a drug. A drug rash might appear due to numerous medications, such as diuretic or antibiotics. Certain drugs are more prone to produce a skin rash if you expose your skin to sunlight. A drug rash resulting due to the intake of a new medication begins as red tiny spots within the first week of use. The spots might merge and spread to other body parts if you do not skip taking the drug that is causing an allergic reaction.