Charley horse
Template:Short description Template:Infobox medical condition A charley horse is a colloquial term typically used to refer to a muscle cramp or stiffness,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> particularly those of the calf, foot, leg,<ref name=AFP2012>Template:Cite journal</ref> or more rarely, the arm.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Some may use the term interchangeably with the term dead leg or thigh contusion, referring to a contusion caused by a physical blow to the leg or thigh.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
The term came into use in the setting of baseball in the United States in the 1880s,<ref>Template:Cite book</ref> though its exact origin is uncertain.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Etymology
The first known written use of the term was in 1886 in the Boston Globe.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The origination has been attributed to two baseball players, Jack Glasscock and Joe Quest.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> However, its exact origins are unknown.<ref>Template:Cite book</ref>
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