Dercum Disease
A rare disorder of painful fatty growths under the skin
Quick Facts
- Type: Rare connective tissue / fat disorder
- Hallmark: Painful subcutaneous fatty lumps
- Most affected: Adults, more often women
- Main goal of care: Pain relief and quality of life
Overview
Dercum disease, also called adiposis dolorosa, is a rare disorder marked by multiple painful growths of fatty tissue (lipomas) just under the skin. The lumps most often appear on the trunk, upper arms, and legs, and the pain they cause can be out of proportion to their size.
The condition tends to begin in adulthood and is reported more often in women. Because it is uncommon and its symptoms overlap with other conditions, Dercum disease is frequently underrecognized. There is no cure, but a combination of pain management and supportive care can meaningfully improve daily life.
Symptoms
The defining feature is chronic pain in fatty deposits under the skin. Symptoms vary widely from person to person.
- Multiple soft, fatty lumps that are tender or painful to the touch
- Burning, aching, or pressure-like pain in affected areas
- Easy bruising over the lumps
- General fatigue and weakness
- Weight gain that is difficult to control
- Sometimes difficulty concentrating, sleep problems, or low mood related to chronic pain
The pain can be constant or come and go, and it may worsen with pressure or movement.
Causes
The exact cause of Dercum disease is not known. Several ideas have been proposed, but none has been proven to explain every case.
- Nervous system involvement: Some researchers think the pain reflects abnormal signaling in nerves around the fatty tissue.
- Inflammation: The fatty growths may involve a low-grade inflammatory process.
- Connective tissue or fat metabolism changes: Differences in how fat tissue forms and is maintained may play a role.
A minority of cases appear to run in families, suggesting a possible genetic contribution, but most occur with no clear family history.
Risk Factors
- Adult age, usually between 35 and 50 at onset
- Female sex (the condition is reported more often in women)
- Obesity, although the disease also affects people who are not obese
- A family history of similar painful lumps in a small number of cases
Having these factors does not mean a person will develop the condition; Dercum disease remains rare.
Diagnosis
There is no single test for Dercum disease, so doctors make the diagnosis by recognizing the pattern of symptoms and ruling out other causes.
- Medical history and physical exam: Identifying multiple painful fatty lumps and chronic pain is central.
- Imaging: Ultrasound or MRI can show the fatty growths and help distinguish them from other masses.
- Blood tests: Used to exclude thyroid, metabolic, or inflammatory conditions that can mimic the symptoms.
- Biopsy: Occasionally a sample of tissue is examined to confirm the lumps are fatty and not another type of growth.
Treatment
Treatment focuses on relieving pain and supporting overall well-being, since no therapy reliably cures the disease.
- Pain management: Options may include over-the-counter pain relievers, certain medicines used for nerve-related pain, and, in some cases, local anesthetic approaches.
- Removal of lumps: Surgical removal or liposuction of particularly painful deposits can help selected people, though lumps may return.
- Physical therapy and gentle exercise: Can ease stiffness, support mobility, and improve quality of life.
- Weight management: Maintaining a healthy weight may reduce strain, though it does not eliminate the lumps.
- Mental health support: Counseling and pain-coping strategies help with the emotional impact of chronic pain.
Care is usually tailored to the individual and may involve a team including a primary care doctor, pain specialist, and others.
Prevention
Because the cause is unknown, there is no proven way to prevent Dercum disease. People living with the condition can, however, take steps that may limit symptom flares and support general health:
- Stay physically active within comfortable limits
- Maintain a healthy weight
- Manage stress and prioritize good sleep
- Work with a clinician on a steady, long-term pain plan rather than relying on short-term fixes
When to See a Doctor
See a doctor if you develop multiple tender lumps under the skin, ongoing unexplained pain in fatty areas, or lumps that grow, change, or interfere with daily activities. Early evaluation helps confirm the diagnosis and rule out other conditions.
Seek prompt medical attention for any lump that grows quickly, becomes hard or fixed, changes color, or is accompanied by fever, night sweats, or unexplained weight loss, as these features can point to a different problem that needs separate evaluation.
Frequently Asked Questions
Is Dercum disease cancer?
No. The fatty lumps of Dercum disease are benign (non-cancerous) growths called lipomas. The main problem is the pain they cause rather than a risk of spreading. Any lump that grows quickly or becomes hard should still be checked to rule out other conditions.
Why are the lumps so painful?
The reason is not fully understood. Researchers think the pain may involve irritated nerves around the fatty tissue or low-grade inflammation. The pain is often more severe than the size of the lumps would suggest.
Can the lumps be removed?
Yes, painful lumps can sometimes be removed with surgery or liposuction, which may relieve symptoms in that area. However, new lumps can form over time, so removal is not a permanent cure.
Does losing weight cure Dercum disease?
Weight loss does not cure the condition, and the painful lumps can persist even after weight is lost. Maintaining a healthy weight may still help with overall comfort and general health.
Which doctor treats Dercum disease?
Because it affects fat, nerves, and pain, care often involves several clinicians. A primary care doctor may coordinate care with a pain specialist, and sometimes a dermatologist, endocrinologist, or surgeon depending on symptoms.
References
- National Organization for Rare Disorders (NORD). Adiposis Dolorosa.
- Genetic and Rare Diseases Information Center (GARD). Dercum disease.
- MedlinePlus, U.S. National Library of Medicine. Adiposis dolorosa.