Certain genetic disorders that cause unusual fat accumulation
Osteoporosis may cause a curvature of the spine in the neck called kyphoscoliosis. This causes an abnormal shape but does not by itself cause excessive fat in the back of the neck.
If the hump is caused by a certain medicine, your doctor may tell you to stop taking the medicine or change the dosage. Do not stop taking the medicine without first talking to your doctor.
Diet and exercise can help you lose weight and may relieve some fat accumulation due to obesity.
When to Contact a Medical Professional
Make an appointment with your doctor if you have an unexplained hump behind the shoulders.
What to Expect at Your Office Visit
Your doctor will perform a physical examination and ask about your medical history and symptoms. Tests may be ordered to determine the cause.
Treatment will be aimed at the problem that caused the fat to develop in the first place.
Tan SH, Sen P, Tang M. Lipodystrophies. In: Bolognia JL, Jorizzo JL, Schaffer JV, eds. Dermatology. 3rd ed. Philadelphia, Pa: Elsevier Saunders; 2012:chap 101.
Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.