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Medical conditions such as diabetes can cause foot cramps due to the lack of oxygen supplied to the feet. It is very important that you eat properly and get enough vitamins and minerals. A lack of potassium in your system can cause cramps in your feet and legs. Vitamin D is also important to healthy feet and bones.
Leg cramps may happen for several reasons: lack of fluids, injury, muscle strain, or staying in the same position for a long period of time. Blood circulation problems or pressure on the nerves in the spine can also cause cramp-like pains in your legs. Other common causes include: 1  Pregnancy. 2  Diabetes. 3  Decreased potassium level. 4  Neuromuscular disorders, such as Parkinsonâs disease. 5  Certain medications. 6  Alcohol and excess caffeine use. 7  Several vitamin deficiencies may directly or indirectly lead to muscle cramps including thiamine, pantothenic acid, and vitamin B6.