Detailed answer

Melasma, a common skin condition characterized by dark patches on the face, can resemble drug rashes in some cases. Both melasma and drug rashes can cause skin discoloration, making it challenging to differentiate between the two. However, there are some distinguishing factors to consider. Melasma tends to occur symmetrically on the face, particularly on the cheeks, forehead, nose, and upper lip. It is usually triggered by sun exposure and hormonal changes. On the other hand, drug rashes may appear on various parts of the body and can be accompanied by other symptoms like itching or swelling. If you suspect that your skin discoloration is related to a medication you are taking, consult a healthcare professional for an accurate diagnosis.