“…The predominance of middle-aged women with psychiatric disorders has been previously noted (Dawborn et al, 1966;McMillan et al, 1968), as has the high incidence of peptic ulceration and anaemia (Prescott, 1966;Dawborn et al, 1966). Our results confirm the diagnostic value of sterile pyuria (Bell et al, 1969) and renal colic and haematuria (Dawbom et al, 1966), as these occurred in more than one-quarter of our patients. Urinary tract infection was not uncommon, particularly in the terminal stages, but appears less common than in Sweden, where Bengtsson and Hood (1965) found 60% of cases of chronic non-obstructive pyelonephritis to be assoc'iated with analgesic abuse.…”