drug reaction

A drug reaction occurs when a medication causes an unintended effect in the body, which may range from mild to severe. It can result from the body’s immune response, genetic factors, or interactions with other medicines. These reactions might include symptoms like rashes, swelling, stomach upset, or more serious health issues. Not all side effects are allergic reactions; some are predictable based on how the drug works. Recognizing drug reactions helps ensure safe medication use, and if any unusual symptoms occur, consulting a healthcare professional is important for proper management.