A sudden, involuntary, spasmodic muscular contraction causing severe pain, often occurring in the leg or shoulder as the result of strain or chill.

• 痉挛一种由于紧张或寒冷而导致的肌肉突发性、无意识的、间歇性的紧缩，能导致剧烈的疼痛，通常发生在腿部或肩部