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Just when it is time to unwind and give the legs a much-needed break, leg pain at night can ruin any plans for rest. Night leg pain is so common that it is difficult to meet a person who has not experienced total sleep disruption as a result. Men, women and children have experienced this phenomenon. The causes of night leg pain might be from restless leg syndrome, nocturnal leg cramps or growing pains. Video of the Day
By Mayo Clinic Staff. Night leg cramps, also called nocturnal leg cramps, are painful, involuntary contractions or spasms of muscles in your legs, usually occurring when you're in bed. Night leg cramps usually involve your calf muscles, although muscles in your feet or thighs might cramp as well.