periodic catatonia

per·i·od·ic cat·a·to·ni·a

regularly reappearing phases of catatonic excitement.

periodic catatonia

An inherited form of schizophrenia characterized by psychomotor disturbances, including grimacing, stereotyped body movements, and hyperkinetic movements alternating with mutism, staring, and body posturing. Susceptibility to this condition has been linked to genes on chromosome 15.