Quadriceps Setting. This exercise helps to strengthen the quadriceps muscle (the big muscle on the front of the thigh), an important stabilizer of the knee. click to enlarge. Lie on your back with the leg you want to exercise straight. Place a small rolled towel underneath the knee.
Hallucinogens can cause an excited catatonic state, including 3,4-methylenedioxymethamphetamine (ecstasy) and phencyclidine (angel dust). Carbon monoxide poisoning can cause catatonia due to damage to the basal ganglia.
Trichotillomania causes significant emotional distress and often impairs social functioning. The exact cause of the condition is not known. Trichotillomania was previously classified as an impulse control disorder but is now considered an obsessive-compulsive related disorder in the latest version of the psychiatric Diagnostic and Statistical Manual of Mental Disorders (Version 5, American Psychiatric Association).