(HealthDay News) -- Restless leg syndrome is characterized by uncomfortable feelings in the legs and feeling the urgent need to move them.

The U.S. National Library of Medicine says possible triggers of restless leg syndrome include:

  • Having a family history of the condition.
  • Being pregnant.
  • Having an iron deficiency.
  • Having side effects from certain medications.
  • Having Parkinson's disease.
  • Having chronic kidney disease.
  • Having peripheral neuropathy.