This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Lymphocytic hypophysitis (LH) is a condition in which the pituitary gland becomes infiltrated by lymphocytes, resulting in pituitary enlargement and impaired function. It most often occurs in women in late pregnancy or the postpartum period, but can also occur in prepubertal or post-menopausal women, and in men. Symptoms of LH may include headache, visual field impairment and more rarely, double vision (diplopia). The exact cause is unknown but is thought to be autoimmune-related. Although some cases resolve on their own or after a short course of steroids, other cases cause persistent problems even with aggressive medical or surgical treatment.
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