What is the term for an involuntary shaking movement?

The term for an involuntary shaking movement is "tremor." Tremors are characterized by rhythmic shaking, which can occur in various parts of the body, most commonly the hands. They often result from neurological conditions, but can also be caused by other factors, such as stress or fatigue.

Convulsions refer to sudden, violent, and uncontrolled muscle contractions, which can include a wider range of movements and may not be rhythmic like a tremor. Spasms are sudden, involuntary contractions of a muscle or group of muscles, which are typically more localized and often short-lived. Seizures encompass a spectrum of behaviors resulting from abnormal electrical activity in the brain, which may include convulsions but can also involve other symptoms such as loss of consciousness or altered awareness.

Understanding these distinctions is crucial for accurate coding and documentation in a clinical setting.