Which symptom is NOT typical of postpartum thyroiditis?

Postpartum thyroiditis is an inflammatory condition of the thyroid that can occur after childbirth, typically presenting in the first year postpartum. It can lead to temporary changes in thyroid hormone levels, resulting in symptoms that are more aligned with hyperthyroidism or hypothyroidism.

Excessive weight gain is not a typical symptom of this condition because postpartum thyroiditis often presents with an initial hyperthyroid phase, where symptoms such as anxiety, heat intolerance, and tremors are more common due to increased metabolism associated with elevated thyroid hormone levels. In fact, hyperthyroidism can lead to weight loss rather than weight gain, as the body's metabolism speeds up.

In contrast, when the thyroid gland becomes underactive in the later stages or after the hyperthyroid phase, one might experience weight gain, but this weight gain is not considered excessive as a direct symptom of postpartum thyroiditis itself. Thus, the association of excessive weight gain with postpartum thyroiditis is incorrect. This makes it the option that does not fit with the typical symptomatology of the condition.