Responders' recommendations for a 30-year-old woman who is 3 months postpartum, lactating and has a relapse of GD. * Follow-up without treatment (n = 1), PTU once daily and discarding milk produced in 6 h after the dose (n = 1), PTU and continue lactation as long as the dose is <300 mg daily (n = 3), stop lactation and 131I (n = 1), and miscellaneous (n = 7).