The actual cause cramps in the legs and feet is not known, but it may be caused by conditions or activities such as overuse of muscles, dehydration, nerve compression, mineral deficiency and cold weather, according to Ma... More »

Legs may cramp at night for a variety of reasons, including too much exercise, sitting for a long time or sleeping in an awkward position, according to WebMD. Underlying conditions of night leg cramps include pregnancy, ... More »

Causes of foot and leg cramps include muscle fatigue or injury, pregnancy, dehydration, vitamin deficiencies and cold temperatures, says WebMD. Occasionally, cramps are the result of inadequate blood flow, thyroid or kid... More »

www.reference.com Health Pain & Symptoms

Injuries, poor blood flow, overuse, spinal nerve compression and dehydration can cause leg cramps or spasms, according to Healthline. Leg spasms, often called "charley horses," also occur in people with low levels of cer... More »

Muscle spasms frequently occur due to the overuse of muscles through repetitive exercise or physical activity or as a result of dehydration, according to MedicineNet. Muscle spasms can also result from medical conditions... More »

www.reference.com Health Pain & Symptoms

Some cause of muscle spasms are overuse or exercise of muscles on the left side, dehydration and atherosclerosis, according to MedicineNet. Nervous system disorders such as amyotrophic lateral sclerosis, multiple scleros... More »

Bone pain in the legs can be a symptom of a variety of conditions, including bone cancer, anemia, infection, injury and overuse, according to MedlinePlus. Osteoporosis, osteomyelitis and leukemia are other possibilities.... More »