We found that antimicrobials, analgesics, antihypertensives, anxiolytics, diuretics, and an additive in an injection were responsible agents in the present study. As previously reported in various investigations,9,11,14,20,25 we found that antimicrobials were the most common class of drugs implicated in drug-induced LCV. The list is exhaustive, but, in addition to those reported in our study, anticonvulsives, opiates, nonsteroidal anti-inflammatory drugs, aspirin, pyrazolones, propylthiouracil, allopurinol, antituberculous agents, and antifungals have been implicated in previous studies.11,16,25,30 The frequency of drug-induced LCV ranges from 10% to 45% depending on the study and the patient selection methods used.9- 11,14,20,25 Although the overall incidence of LCV has not been clearly documented, it is likely that drug-induced cases make up a significant portion of patients with the disease. Thus, it is important for clinicians to be aware of the drugs commonly found to be responsible for cutaneous SVV. Moreover, novel therapies, such as biologic mediators, have been associated with vasculitis.31 Last, additives in particular medications or even different formulations of the same medication may result in LCV.