International Essential Tremor Foundation 

Essential Tremors, Familial Tremor, Hereditary Tremor, Benign Essential Tremor, Voice Tremor, Hand Tremor, Head Tremor, Leg Tremor, Body Tremor, Tongue Tremor, Shaky, Nervous Tremors, Quivering

A Closer Look at Essential Tremors 

WebMD provides basic information to help you recognize and seek professional help for essential tremors." Tremor, tremors, Essential Tremor, benign essential tremor, worsen, worse, disorder, pathologic processes, used, use, disorder, postural tremor, static tremor, periods, menstruation, nerve disorder, nerve d, body, human body, relieved, relieved by, begin, starting process, arms, arm, advances, advance"

Essential Tremors - Overview, Risks, Symptoms, Diagnosis - neurologychannel 

Tremor is involuntary trembling in part of the body. Essential tremor is associated with purposeful movement (e.g., holding a glass to drink, shaving, writing, buttoning a shirt). It occurs most often in the hands and head and also may affect the arms, voice box (larynx), trunk, and legs. essential tremors, contraction, involuntary trembling, muscular, hands, head, loss of functionality