Our expert says:
Possible causes could be:
1. Meralgia paresthetica - causes tingling, numbness or other sensations on the upper thigh. It is caused by nerve damage to one of the nerves coming from the spine to the thigh region.
2. Low phosphate levels
3. Injury or inflammation of the muscles or tendons of the thigh - like ileotibial band syndrome -when a band of a tendon rubs over the outer bone (lateral condyle) of the knee
4. cramping of the muscles of the thigh due to low magnesium or calcium
5. referring pain from a hip problem
You need at least an x/ray of the bone of the thigh, hip, as well as a low back x/ray
Blood tests: Full blood count, phosphate, calcium and magnesium levels
Preferably an evaluation by a physiotherapist to check for nerve compression
Possibly a MRI of the back to check for slipped discs
Referral to a neurologist or neurosurgeon if signs of nerve compression are found
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