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Spasm

Definition

• A spasm is an abnormal involuntary muscle contraction such as a twitch or cramp that is accompanied by pain and/or interference with normal function. Cramp-like spasms of muscles are called tetany.

Additional Info

Spasms can have a number of causes. For example, back pain and spasms can be caused by a strain, sprain or injury. Other spasms can be caused by pinched nerves, for example, a hemifacial spasm (one affecting one side of the face only) is caused when an artery presses on one of the facial nerves that controls the muscles on that side of the face.

The science of ergonomics looks at the relationship of man and his work, incorporating the anatomic, physiologic, and mechanical factors involved to achieve safety and efficiency. Following good ergonomic principles can avoid many common workplace injuries such as back strain, carpal tunnel syndrome, and more. See the links under Further Reading for basic ergonomic principles and more.

MSDS Relevance

This term usually appears on MSDS's as a symptom of exposure. Exposure to certain chemicals can cause spasms or tremors. If these involve the heart, the condition can be life-threatening.

Read the MSDS's of the chemicals used in your workplace before you use them for the first time. Know if any of them have the potential to cause spasms so you can recognize the spasm as a symptom of exposure.

Further Reading

Wikipedia's entry on spasm. Coronary Artery Spasm at the Amrican Heart Association. Muscle Spasm at Helio Health. Eyelid Spasms (Eye Twitching) at the U of Michigan Kellog Eye Center. Muscle Cramps as well as hand or foot spasms at the NIH's MedlinePlus Medical Encyclopedia. OSHA's Ergonomics Resource Page. Ergonomics at the NIH's MedLine Plus Medical Encyclopedia. See also: myalgia, nystagmus. Additional definitions from Google and OneLook.

Get ergonomics banners, posters, videos, labels, and handbooks to promote back and lifting safety at Safety Emporium.

Disclaimer: The information contained herein is believed to be true and accurate, however ILPI makes no guarantees concerning the veracity of any statement. Use of any information on this page is at the reader's own risk. ILPI strongly encourages the reader to consult the appropriate local, state and federal agencies concerning the matters discussed herein.