Definition of Nelson's syndrome in US English:

Nelson's syndrome

noun

Medicine
  • A syndrome characterized by the presence of an enlarging pituitary tumour, associated with elevated ACTH levels and hyperpigmentation, in a patient who has previously undergone bilateral adrenalectomy for Cushing's syndrome.

Origin

1970s; earliest use found in Progress in Atomic Medicine. From the name of Don H. Nelson, U.S. physician, who described the syndrome in 1960 ( Ann. Internal Med 52 560).

Pronunciation

Nelson's syndrome

/ˈnɛlsnz ˌsɪndrəʊm/