If the patient gets admitted with an infection of skin with herpex simplex virus, then which drug is most likely to be prescribed by the dermatologist?

Acyclovir is the specific antiviral drug used for herpes simplex virus (HSV) infections. It works by inhibiting viral DNA polymerase, preventing viral replication. Ibuprofen is an NSAID for pain and inflammation, erythromycin is an antibiotic for bacterial infections, and dapsone is used for leprosy and dermatitis herpetiformis - none are antivirals.