Medical

The extent that a joint will move from full extension to full flexion.

A tremor, in a limb, that increases when the limb is at rest.

The tendency to step backwards if bumped from the front or upon initiating walking, usually seen in patients who tend to lean backwards because of problems with balance.

Increased resistance to the passive movement of a limb.

A hardening within the nervous system, especially of the brain and spinal cord, resulting from degeneration of nervous elements such as the myelin sheath.

Drooling

An action or effect of a drug other than that desired. Commonly it is an undesirable effect such as nausea, headache, insomnia, acute toxic reaction or drug interaction.

A condition in which a muscle or group of muscles involuntarily contract.

A condition characterized by difficulties with speech, chewing and swallowing. These symptoms resemble those of bulbar palsy, but this condition is also characterized by spontaneous or unmotivated crying and laughing.

A self-replicating (autonomous) circle of DNA distinct from the chromosomal genome of bacteria. A plasmid contains genes normally not essential for cell growth or survival. Some plasmids can integrate into the host genome, be artificially constructed in the laboratory and serve as vectors (carriers) in cloning.