https://www.betterhealth.vic.gov.au/health/ConditionsAndTreatments/essential-tremor

Essential tremor causes involuntary shaking or trembling of particular parts of the body, usually the head and hands, but it is not Parkinson's disease.

https://www.webmd.com/brain/essential-tremor-basics

Sep 27, 2017 ... Areas affected often include the hands, arms, head, larynx (voice box), ... Shaking voice; Nodding head; Tremors that worsen during periods of ...

https://www.dystonia.org.uk/detail-on-tremor

Nov 23, 2016 ... People often ask us about the difference between head shaking caused by ... and does not allow any slight involuntary movement of the head.

https://www.medicinenet.com/nodding_syndrome_symptoms_nodding_disease/views.htm

Read about nodding syndrome symptoms (nodding disease), including nodding of the head and seizure-like activity. Learn what experts at the CDC are doing to  ...

https://www.mayoclinic.org/diseases-conditions/essential-tremor/symptoms-causes/syc-20350534

Jan 23, 2019 ... ... system (neurological) disorder that causes involuntary and rhythmic shaking. ... Essential tremor mainly involves your hands, head and voice.

https://www.healthline.com/health/head-twitching

Jun 1, 2018 ... We also talk about involuntary head movement and anxiety. ... Essential tremor is a brain disorder that causes trembling or shaking that ...

https://stanfordmedicine25.stanford.edu/the25/im.html

Involuntary movements compose a group of uncontrolled movements. ... Titubation refers to tremor of the head (and sometimes trunk) due to cerebellar disease .... reactions result in dystonia, typically generalized in children and focal in adults.

https://www.hopkinsmedicine.org/health/conditions-and-diseases/essential-tremor-disorder

If you have ET, you will have shaking and trembling at different times and in different ... Shaking or quivering sound in your voice; Uncontrollable head- nodding ...

https://www.aans.org/Patients/Neurosurgical-Conditions-and-Treatments/Movement-Disorders

Dystonia is a neurological muscle disorder characterized by involuntary muscle spasms. ... Essential tremor is an uncontrolled shaking or trembling, usually of one or both ... essential tremors are found most commonly in adults over the age of 65. .... ability to express feelings, developmental delays in brain and head growth, ...

https://en.wikipedia.org/wiki/Bobble-head_doll_syndrome

Bobble-head doll syndrome is a rare neurological movement disorder in which patients, usually children around age 3, begin to bob their head and shoulders forward and back, or sometimes side-to-side, involuntarily, in a manner reminiscent of a bobblehead doll. ... A supplemental symptom of the head bobbing is a presence of ataxia.