“…Pituitary apoplexy is a term which describes an acute clinical syndrome, characterized by sudden onset of headache, vomiting, visual disturbance, ophthalmoplegia, and altered consciousness (Brougham et al ., 1950; Wakai et al ., 1981; Cardoso & Peterson, 1984). This constellation of findings occurs primarily in patients with pre‐existing pituitary adenomas (Rovit & Fein, 1972; Mohr & Hardy, 1982; Ebersold et al ., 1983), and can be due to extensive tumour infarction (Jefferson & Rosenthal, 1959; Conomy et al ., 1975) or haemorrhage (Brougham et al ., 1950; Uihlein et al ., 1957; Epstein et al ., 1971). The term has also been used to describe spontaneous infarction and haemorrhage within a nontumourous pituitary gland (Conomy et al ., 1975; Reid et al ., 1985) with similar clinical effects.…”