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  2. Stiff-person syndrome - Wikipedia

    en.wikipedia.org/wiki/Stiff-person_syndrome

    Stiff-person syndrome (SPS), also known as stiff-man syndrome, [1] is a rare neurological disorder of unclear cause characterized by progressive muscular rigidity and stiffness. The stiffness primarily affects the truncal muscles and is characterised by spasms , resulting in postural deformities.

  3. Hypertonia - Wikipedia

    en.wikipedia.org/wiki/Hypertonia

    Spastic hypertonia involves uncontrollable muscle spasms, stiffening or straightening out of muscles, shock-like contractions of all or part of a group of muscles, and abnormal muscle tone. It is seen in disorders such as cerebral palsy, stroke, and spinal cord injury. Rigidity is a severe state of hypertonia where muscle resistance occurs ...

  4. Proximal diabetic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Proximal_diabetic_neuropathy

    The damage to nerves supplying specific muscles may cause muscle twitching (fasciculations) in addition to the weakness. It is sometimes associated with weight loss. [2] Diabetes most commonly causes damage to the long nerves that supply the feet and lower legs, causing numbness, tingling and pain (diabetic polyneuropathy). Although these ...

  5. Alcoholic polyneuropathy - Wikipedia

    en.wikipedia.org/wiki/Alcoholic_polyneuropathy

    This nerve damage causes an individual to experience pain and motor weakness, first in the feet and hands and then progressing centrally. Alcoholic polyneuropathy is caused primarily by chronic alcoholism ; however, vitamin deficiencies are also known to contribute to its development.

  6. Signs and symptoms of Parkinson's disease - Wikipedia

    en.wikipedia.org/wiki/Signs_and_symptoms_of...

    Rigidity is characterized by an increased muscle tone (an excessive and continuous contraction of the muscles) which produces stiffness and resistance to movement in joints. [1] Rigidity may be associated with joint pain, with such pain being a frequent initial manifestation of the disease. [1]

  7. Benign fasciculation syndrome - Wikipedia

    en.wikipedia.org/wiki/Benign_fasciculation_syndrome

    Benign fasciculation syndrome (BFS) is characterized by fasciculation (twitching) of voluntary muscles in the body. [1] The twitching can occur in any voluntary muscle group but is most common in the eyelids, arms, hands, fingers, legs, and feet. The tongue can also be affected. The twitching may be occasional to continuous. [2]