Hi, welcome to the forum, the causes of Restless leg syndrome are peripheral neuropathies, vitamin and minerals deficiencies, lumbosacral radiculopathy, spinal stenosis, excess caffeine intake, hypoglycemia, and hypothyroidism.
You need to undergo spinal radio imaging, blood sugar and thyroid status to rule out the cause.
Pertaining to this I suggest you to consult a neurologist to rule out the cause and treatment accordingly. You may have to take vitamin B-complex supplementation. As such this would not be a matter of concern. Take care and regards.
You may need a multifacted approach to resolve your RLS and leg cramps as they may not be from the same cause. Have you had a thorough medical workup lately? Magnesium and potassium come to mind, and iron studies could tell if that could be playing a role in your RLS. For the RLS, avoiding caffeine is usually recommended. It's also a good idea to evaluate any meds for having worsening of RLS as a known side effect. Whatever you can discover to help either issue will improve your sleep, and helping one may give you enough rest to have the energy to pursue remaining symptoms.
have doctor check magneisum level in blood