A spasm is a sudden, violent, involuntary contraction of a muscle or a group of muscles (including involuntary muscles such as in an artery, the colon, or the esophagus), attended by pain and interference with function, producing involuntary movement and distortion.

Symptom severities
Severe
42
Moderate
67
Mild
43
None
26
What patients report taking for the purpose of treating Nighttime leg spasms
Patients
Requip 6
Tizanidine 3
Valium 3
Cyclobenzaprine 2
Clonazepam 2
Sifrol 1
Flexeril 1
Gabapentin 1
Mirapex ER 1
Morphine 1
Amitriptyline 1
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