'''Cramp''' is a painful contraction of the [[muscle]]s<ref>[http://www.bbc.co.uk/health/ask_the_doctor/crampleg.shtml BBC Health]</ref><ref>[http://iq.lycos.co.uk/qa/show/10413/What+is+cramp%3F What is cramp?]</ref><ref>[http://www.patient.co.uk/showdoc/23068794 Patient UK]</ref>. It can be triggered by physiological factors such as [[cold]], poor [[blood]] flow (such as [[swimming]] after eating) or by [[psychology|psychological]] factors (such as [[Wernicke's cramp]]).
[[Stomach]] cramps may often be caused by [[food]] poisoning or [[gastro-enteritis]]. Cramps may often be symptomatic of other diseases or conditions such as [[kidney|renal]] failure or [[pregnancy]].
Muscle cramps can often be releaved through soft massage of the cramped muscle, stretching or application of heat or cold. Cramps from lack of water and/or salt can be treated, by drinking [[water]] and/or increasing [[salt]] (sodium or potassium) intake respectively.