Several known factors regarding tryptophan metabolism and kynurenines, however, may explain the presence of behavioral abnormalities seen with the disorder.

Some related behavioral abnormalities have been found in non-human great apes.

Catatonia is a state of neurogenic motor immobility, and behavioral abnormality manifested by stupor.

Any dog clearly showing any physical or behavioral abnormalities.

"There's been a prejudice, a bias, that obesity is a behavioral abnormality," Dr. Barsh said.

Red tide was linked to the deaths of 39 manatees two decades ago, but symptoms like behavioral abnormalities are not shared by the latest casualties.

But don't be fooled by the absence of behavioral abnormalities.

Around 30-50% of them will also have developmental delay/mental retardation, psychotic-like features, incoordination of movements or behavioral abnormalities.

Other studies suggest similar low lead levels cause behavioral abnormalities in young children, particularly undue aggressiveness.

Initial symptoms of take-over include drastic mood swings, behavioral abnormalities, and nervous breakdowns, as the parasite adjusts to taking control of the person's mind.