Secondary parkinsonism is among the more serious side effects of antipsychotic drugs. It gets its name from Parkinson's disease, a neurological disorder where brain cells that produce the neurotransmitter are slowly destroyed. Over time this leads to loss of muscle function.
Drugs such as Abilify, Risperdal, Seroquel and all the other antipsychotics may cause symptoms of Parkinson's disease including:
- Softened voice
- Stiffer muscles in torso, legs, arms
- Tremor
- Problems start or stopping...

