The specific cause of essential tremors is not yet known, but the condition is linked to irregular electrical activity in the brain. Genetic mutation is believed to cause essential tremors in about half of the cases. Thi... More » Health Pain & Symptoms

The exact causes of essential tremor remain unknown, but roughly half of essential tremor cases involve genetic mutations, reports Mayo Clinic. Abnormality in electrical brain activity processed through the thalamus is s... More »

Essential tremor, as it is often called, is a neurological disorder that causes a rhythmic tremor, or shaking, defines Mayo Clinic. The disorder most often affects the hands but can occur almost anywhere in the body, inc... More » Health Conditions & Diseases

The primary symptoms associated with essential tremors include shaking voice, nodding head, balance issues, tremors that reduce with a rest, tremors that worsen with stress and uncontrollable shaking episodes, notes WebM... More » Health Conditions & Diseases

A possible cause of sudden muscle weakness in one or both legs is stroke, which is a potentially fatal condition that reduces oxygen supply to the brain, states Healthgrades. Other potential causes of leg weakness includ... More »

Full-body tremors are caused by neurological problems in areas of the brain managing muscles throughout the entire body, notes the National Institute for Neurological Disorders and Stroke. Some common disorders that caus... More »

The severity of hand tremors depends on the cause, explains MedlinePlus. Most tremors get better when the underlying condition is treated. The most common tremor is the essential tremor, and it involves rapid movements o... More » Health Pain & Symptoms