A tremor is a regular rhythmic oscillation of a part of the body caused by alternate contractions of muscles either side of a joint. Trembling is simply an exacerbation of a tremor affecting a larger part of the system, such as an arm or leg.

Anything that affects the nerves or the neuromuscular junction will potentially cause a tremor and the most common causes are the toxic effect from alcohol withdrawal , caffeine or other stimulatory drugs such as amphetamines or cocaine. An excess of thyroxine or adrenaline may cause such problems and may indicate underlying conditions such as hyperthyroidism or adrenal tumours. Other symptoms such as sweating and weight loss are usually associated.

Neurological diseases such as Parkinson’s disease, which can cause a tremor when resting, or stroke, which may affect the coordination centres, can be differentiated by causing an unintentional tremor. Fevers may trigger trembling or tremors because the body uses muscular movements to increase its temperature to kill off the bugs.

A twitch is the involuntary contraction of a single muscle group and is usually an indication of an entrapped nerve or peripheral neurological damage. A twitch is known medically as a fascicu-lation and may be an indication of more serious neurological conditions, such as motor neurone disease.

Treatment should depend upon the underlying cause and reference should be made to the relevant section here.

The homeopathic remedy Agaricus muscarius may be taken at potency 30 four times a day until a diagnosis is made. Trembling due to nervousness may benefit from Ignatia 6 taken every 15min or Argentum nitricum may be used instead.