Talk to General Physician on Feeling Too Much Cold My Right Thigh During Sitting In AC

I feel sever cold my leg specially right side of thigh when i sit in the AC just like an Ice scoop is placed, this is happening since three years particularly it happens in ramadan, i went to doctors (neurologists & psychiatrist) got treatments but result is intact, kindly some one suggest me what should i do to diagnose this problem jazakallah