Thigh fat accumulation, and also uneven situation, usually may be caused by the following reasons: First, it is possible that people obesity especially fast, so that the subcutaneous fat growth is not uniform, this situation may occur, usually after a period of time the subcutaneous fat slowly symmetrical growth, uneven symptoms should be slowly alleviated. Secondly, there may be multiple lipomas inside the fat of thighs. Usually, touching the fat of thighs in this situation may touch multiple hard nodules, and these hard nodules are usually irregular, with clearer boundaries and higher mobility; if you touch the hard nodules, you can go to the hospital and check the local ultrasound for a clear diagnosis.