You searched for: “ischialgia
ischialgia (s) (noun) (no pl)
Pain in the hip; specifically the ischium; ischiodynia: Olive suffered in the area of her hip, and Dr. Body told her that she had a case of ischialgia, having its source in a condition of osteonecrosis.

Patty read about ischialgia being a rarely used term for sciatica, a neuralgia of the sciatic nerve.

Ischialgia is also known ischioneuralgia.