Introduction
  In 1948 H.E.W. Roberton, a general practitioner in New Zealand, described the occurrence of lassitude and other symptoms of hypothyroidism relating to the postpartum period(1). These complaints were treated successfully with thyroid extract. The syndrome remained generally unrecognised until the 70s when reports from Japan(2) and Canada(3) rediscovered the existence of postpartum thyroid disease (PPTD) and recognised the immune nature of the condition. A number of reviews of the condition are available.(4-7).