night time leg cramps for extended period of time, 3 years old

My granddaughter has been having leg cramps severe enough to wake her up crying for over 6 months now, are these growing pains? Should they be lasting this long? She is losing sleep over this.

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Potassium deficiency may cause nocturnal leg cramps. make sure she eats plenty of potassium rich foods, like

  • Bananas, apricots, nectarines, dates, grapes, or raisins
  • Beans
  • Cabbage/broccoli family of vegetables
  • Oranges, grapefruit, and their juice
  • Potatoes and corn
  • Saltwater fish (for example, tuna)
  • Tomatoes and tomato juice

also dehydration may cause leg cramps, make sure she drink plenty of water or juice.

she is just 3 year old, wonder how you know she has leg cramps; she may be playing a lot during day time that why leg pain might be waking up her in the middle of night.