Urinary Cyclic AMP in Periodic Catatonia
Abstract
Urinary excretion of 3',5'-cyclic adenosine monophosphate (cyclic AMP) was measured in two patients with long-established periodic catatonia. One patient exhibited profound stupor in his psychotic phases, while the other exhibited catatonic excitement. No significant differences in urinary cyclic AMP levels were found in either patient between the interval and psychotic phases, nor were there any significant changes in cyclic AMP excretion at or just before the time of abrupt switch from the interval of normality to catatonic stupor or excitement.
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