Thick and bulging flesh at the back of the neck may be caused by obesity, cervical spondylosis, lipoma, etc. It can be eliminated through exercise and weight loss, ultrasonic physical therapy, and lumpectomy. 1. Obesity: weight gain and increased body fat may lead to thick and bulging flesh at the back of the neck, which can be eliminated through scientific diet, exercise, and adopting a reasonable lifestyle. 2. Cervical spondylosis: cervical spondylosis is a degenerative disease of the cervical spine, and patients will experience symptoms such as stiffness and pain in the back of the neck. If the curvature of local cervical vertebrae is changed, there will be thick and bulging flesh at the back of the neck, which can be eliminated by ultrasound, infrared rays, intermediate frequency pulsed electricity and other physical treatments. 3. Lipoma: Lipoma belongs to common soft tissue benign tumor, which is manifested as single or multiple subcutaneous confined tumors. If the lipoma grows in the back of neck, it will lead to thick and bulging flesh in the back of neck. It can be treated by lumpectomy to achieve elimination of the tumor. When a thick bump of flesh on the back of the neck occurs, it is recommended to visit the hospital in time and be treated under the guidance of the doctor.