Lambert–Eaton myasthenic syndrome (LEMS) is a rare autoimmune disease that affects the place where nerves talk to muscles, called the

Hoffmann syndrome is a rare muscle disease that happens in adults with long-standing, untreated or poorly treated hypothyroidism (low thyroid

KDSS syndrome is usually short for Kawasaki Disease Shock Syndrome (KDSS). It is a rare but very serious form of

Hypothyroid myopathy is a muscle disease that happens when the thyroid gland is underactive and does not make enough thyroid

Pickardt syndrome (also called Pickardt–Fahlbusch syndrome) is a very rare hormone problem where the connection between the brain’s control center

Thyroid dyshormonogenesis is a group of rare genetic problems where the thyroid gland is present (often normal or enlarged) but

Van Wyk-Grumbach syndrome is a rare condition seen mainly in children who have severe, long-standing hypothyroidism (very low thyroid hormone).

Euthyroid sick syndrome (also called non-thyroidal illness syndrome or sick euthyroid syndrome) happens when thyroid blood tests look abnormal during

Myxedema coma is a very severe, life-threatening form of hypothyroidism, where the thyroid hormone level becomes so low that the

Myxedema is a medical word for very severe thyroid disease. Doctors use it in two ways. First, it can mean

Congenital hypothyroidism means that a baby is born with too little thyroid hormone in the body. The thyroid is a

Cretinism is an old medical word for a very severe form of congenital hypothyroidism. This means a baby is born

Iodine deficiency means your body is not getting enough iodine, a tiny but very important mineral that you must get

Lymphocytic hypophysitis is a rare disease where the body’s immune system wrongly attacks the pituitary gland, a small hormone-controlling gland

Sheehan’s syndrome is a health problem that happens in some women after childbirth. It occurs when a woman loses a

Pituitary apoplexy is a sudden problem in the pituitary gland, which is a small hormone-making gland at the base of

Empty sella syndrome (ESS) is a condition where the small bony space in the skull that holds the pituitary gland

Central diabetes insipidus (CDI) is a disease where the brain does not make or release enough of a hormone called

hCG insensitivity is a rare genetic hormone problem where the body cannot “hear” the message from the hormone human chorionic

LH insensitivity means that the body does not respond properly to luteinizing hormone (LH), even when the blood level of