Physiological tremors - symptoms and causes

2021-03-16 12:00 AM

Physiological tremors have no clinical significance. Increased physiological tremors may be associated with a number of disorders (eg hyperthyroidism, sympathomimetic substance poisoning, withdrawal condition).

Description

Physiological tremors with a frequency of 7 - 12 Hz typically observed in the arms when stretched (postural tremors). Physiological tremors occur in normal people, although may not be visible to the naked eye. The increased physiological tremors (when tremors are noticed) are caused by triggers such as hyperthyroidism, hypoglycaemia, withdrawal, anxiety or fear.

Reason

Normal is less common (increased physiological tremors).

Hyperthyroidism.

Hypoglycaemia.

The withdrawal status.

Use sympathomimetic analogues.

Tired.

Worry.

Fear.

Mechanism

Physiological tremor of mechanical origin is the oscillation between the synergistic and antagonistic groups due to the combined effect of the pulsating motor neurons, the synchronous response of the spindle muscles, and the mechanical properties of the limbs. can. Physiological tremors are caused by an increase in circulating catecholamines (eg, adrenaline, noradrenaline) and/or increased excretion of the catecholamine receptor (eg hyperthyroidism), which increases contraction of the motor units.

Meaning

Physiological tremors have no clinical significance. Increased physiological tremors may be associated with a number of disorders (eg hyperthyroidism, sympathomimetic substance poisoning, withdrawal condition).