Antitubercular treatment (ATT) is associated with multiple cutaneous adverse drug reactions. Second-line ATT is also associated with numerous adverse reactions; however, cutaneous reactions are under-reported. Oral drug provocation (ODP) in multidrug-resistant tuberculosis is challenging because of the paucity of time and the risk of developing secondary drug resistance in the case of interrupted medication. In this paper, we report a case of drug reaction with eosinophilia and systemic symptoms caused by cycloserine in an 18-year-old girl, which was confirmed with ODP and a patch test.