A 26-yr girl at 31 weeks gestation C/O a 4-week H/O a pustular eruption that developed initially on the periumbilical skin. Subsequently the eruption spread to involve the breasts, back, flexures and proximal limbs. There was cutaneous pain, fever & malaise. O/E the lesions were pustules were arranged in concentric rings while on the breasts there was coalescence of pustules forming lakes of pus. Treatment of choice in this case?
Corticosteroids Methotrexate Topical itraconazole Third generation cephalosporins