Articles

  • Disease

    Acute cerebellar ataxia

    Acute cerebellar ataxia is sudden, due to disease or injury to the cerebellum in the brain.

  • Disease

    Basal ganglia dysfunction

    Basal ganglia dysfunction is a problem with the deep brain structures that help start and control movement.

  • Disease

    Drug-induced tremor

    The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

    Drug-induced tremor is involuntary shaking due to the use of medication. Involuntary means you shake without trying to do so. The shaking occurs when you move or try to hold your arms, hands, or head in a certain position. It is not associated with other symptoms. See also:

  • Disease

    Essential tremor

    The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

    Essential tremor is a type of involuntary shaking movement in which no cause can be identified. Involuntary means you shake without trying to do so. See also:

  • Disease

    Guillain-Barré syndrome

    Superficial muscles are close to the surface of the skin. Muscles which lie closer to bone or internal organs are called deep muscles.

    Guillain-BarrĂ© syndrome is a serious health problem that occurs when the body’s defense (immune) system mistakenly attacks part of the nervous system. This leads to nerve inflammation that causes or paralysis and other symptoms.

  • Disease

    Hallervorden-Spatz disease

    Hallervorden-Spatz disease is a movement disorder that is passed down through families (inherited).

  • Disease

    Multiple sclerosis

    The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

    Multiple sclerosis is an that affects the brain and spinal cord ().

  • Disease

    Optic neuritis

    The cornea allows light to enter the eye.  As light passes through the eye the iris changes shape by expanding and letting more light through or constricting and letting less light through to change pupil size.  The lens then changes shape to allow the accurate focusing of light on the retina.  Light excites photoreceptors that eventually, through a chemical process, transmit nerve signals through the optic nerve to the brain.  The brain processes these nerve impulses into sight.

    Optic neuritis is inflammation of the optic nerve. It may cause sudden, reduced vision in the affected eye.

  • Disease

    Spasmodic dysphonia

    The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

    Spasmodic dysphonia is difficulty speaking due to spasms (dystonia) of the muscles that control the vocal cords.

  • Disease

    Stereotypic movement disorder

    Stereotypic movement disorder is a condition in which a person makes repetitive, purposeless movements (such as hand waving, body rocking, or head banging). The movements interfere with normal activity or have the potential to cause bodily harm.

  • Disease

    Sydenham chorea

    Sydenham chorea is a movement disorder that occurs with .

  • Disease

    Tardive dyskinesia

    The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

    Tardive dyskinesia is a disorder that involves involuntary movements. Most commonly, the movements affect the lower face. Tardive means delayed and dyskinesia means abnormal movement.

  • Disease

    Torticollis

    Torticollis is a form of dystonia (prolonged muscle contractions) in which the neck muscles, particularly the sternocleidomastoid muscle, contract involuntarily causing the head to turn. Torticollis may occur without known cause (idiopathic), be genetic (inherited), or be acquired secondary to damage to the nervous system or muscles.

    Torticollis is a twisted neck in which the head is tipped to one side, while the chin is turned to the other.