Tremor

Tremor means involuntary, rhythmic muscle movement that may appear, for example, in the hands, head, or torso. The severity and area affected by tremor vary, and it may be seen at rest, during movement, or when muscles are tensed. The most common form of tremor in Finland is so-called essential tremor, in which symmetrical tremor of the head and hands is most pronounced especially when using the hands, such as when writing or drinking. The symptoms are often mild, but in some people tremor can significantly make daily activities more difficult.

Another well-known cause of tremor is Parkinson’s disease, where tremor is usually also associated with slowed movement and muscle stiffness. Tremor can also be caused, for example, by high caffeine intake — from energy drinks, for example — strong stress, fatigue, or certain medicines. Sometimes tremor may be caused by rarer diseases or neurological disorders.

Tremor is concerning if it appears suddenly, rapidly worsens, is associated with other neurological symptoms (such as muscle weakness, speech difficulty, or loss of balance), or makes basic daily activities difficult. In such cases, it is important to seek assessment from a healthcare professional. Long-term tremor or tremor that affects daily life should also be discussed with a doctor so that the cause can be determined and treated if necessary.