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Related Experiment Videos

Muscle spasms, twitches in arm upon throwing · Dx?

Kyle Bradford Jones1, Juliann Allred2, David Shprecher3,4

  • 1Department of Family and Preventive Medicine, University of Utah, Salt Lake City, USA.

The Journal of Family Practice
|April 5, 2017
PubMed
Summary

Involuntary upper right arm muscle spasms, beginning in adolescence, significantly impacted daily activities in adulthood. These muscle contractions affected actions like throwing and drinking, indicating a persistent neuromuscular issue.

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Area of Science:

  • Neurology
  • Muscle Physiology

Background:

  • A case study detailing persistent, involuntary muscle contractions in the upper right arm.
  • Onset of symptoms noted during adolescence, progressing to significant functional impairment in adulthood.

Observation:

  • Patient experiences intermittent muscle spasms and involuntary contractions in the upper right arm.
  • Difficulty performing actions such as underhand baseball throws and lifting the arm overhead.
  • Impairment in drinking, while other activities of daily living like eating and writing remain unaffected.

Findings:

  • The persistent nature of the involuntary muscle contractions suggests a chronic neuromuscular condition.
  • Functional limitations are specific to certain arm movements, highlighting the targeted impact of the spasms.

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Implications:

  • Understanding the etiology of such focal muscle spasms is crucial for effective treatment.
  • Further research into chronic, activity-limiting muscle spasms may reveal new therapeutic targets.