Scleredema diabeticorum is a rare but distinctive diabetic skin condition affecting 2-15% of adults with diabetes, particularly those with long-standing poorly controlled type 2 diabetes. The condition presents as thickening and induration (firmness) of skin on the upper back, shoulders, and posterior neck — the distribution is characteristic. Skin feels firm to palpation and may restrict neck and shoulder movement, though usually painless. The mechanism involves increased mucin deposition and collagen disorganization in the dermis. Adults with scleredema diabeticorum are typically middle-aged, obese, with long-standing poorly controlled type 2 diabetes. Treatment options have variable success and no specific therapy is consistently effective. Phototherapy (PUVA, UVA1), topical corticosteroids, and systemic immunosuppressants have been tried with mixed results. Glucose control is recommended but doesn’t reliably reverse established lesions.
Clinical Presentation
- Thickening and induration (firmness) of skin.
- Symmetric distribution: upper back, shoulders, posterior neck.
- Skin feels “doughy” or board-like to palpation.
- Surface appears normal — no scaling or color change.
- Borders not well-demarcated — blends with normal skin.
- Reduced range of motion of neck and shoulders.
- Usually painless.
- Chronic and persistent.
Three Types of Scleredema
| Type | Association | Course |
|---|---|---|
| Type 1 (post-infectious) | Streptococcal infection precedes onset | Usually self-resolving over months |
| Type 2 (paraproteinemic) | Monoclonal gammopathy | Chronic, sometimes progressive |
| Type 3 (diabetic) | Long-standing type 2 diabetes | Chronic, persistent |
Diagnosis
- Clinical exam — characteristic distribution and feel.
- Skin biopsy if uncertain — shows thickened dermis with increased mucin and collagen disorganization.
- Test for diabetes if not previously diagnosed.
- Test for monoclonal gammopathy if type 1 ruled out and not diabetic.
- Differential: scleroderma (different distribution, autoimmune markers), morphea (localized hardened plaques), edema (pitting, different feel).
- Workup includes serum protein electrophoresis to exclude paraproteinemia.
Treatment Options
- Phototherapy: PUVA or UVA1; moderate evidence; multiple sessions needed.
- Topical corticosteroids: limited evidence but commonly tried.
- Intralesional corticosteroids: occasional benefit.
- Methotrexate: case reports of benefit.
- Cyclosporine: occasionally tried for refractory cases.
- Electron beam therapy: anecdotal benefit.
- Physical therapy: maintains range of motion.
- Glucose control: recommended but doesn’t reliably reverse lesions.
- No specific therapy is consistently effective.
Risk Factors
- Long-standing type 2 diabetes (often 10+ years).
- Poor glucose control over time.
- Obesity.
- Male gender (slight predominance).
- Middle age (40-60 years).
- Associated with other diabetic complications.
When to See a Dermatologist
- New or progressive skin thickening on upper back, shoulders, or posterior neck.
- Reduced range of motion of neck or shoulders.
- Uncertainty about whether skin changes are scleredema vs another condition.
- Cosmetic concerns affecting quality of life.
- Functional limitations affecting daily activities.
- To exclude other causes (scleroderma, paraproteinemia, morphea).
- For consideration of phototherapy or other treatment options.
- Adults with long-standing poorly controlled type 2 diabetes noticing skin changes.
- Annual skin exam for adults with diabetes regardless of symptoms.
The Bottom Line
Scleredema diabeticorum is a rare but distinctive diabetic skin condition affecting 2-15% of adults with diabetes, particularly those with long-standing poorly controlled type 2 diabetes. The condition presents as thickening and induration of skin on the upper back, shoulders, and posterior neck — the distribution is characteristic. Skin feels firm to palpation and may restrict range of motion. The mechanism involves increased mucin deposition and collagen disorganization. Treatment options have variable success and no specific therapy is consistently effective. Phototherapy (PUVA, UVA1), topical and systemic corticosteroids, methotrexate, and other immunosuppressants have been tried. Glucose control is recommended for overall diabetes management but doesn’t reliably reverse established scleredema. Physical therapy maintains range of motion. The course is chronic and persistent in most cases — spontaneous resolution is uncommon. For adults with diabetes who notice progressive skin thickening on the upper back and neck, dermatologist evaluation distinguishes scleredema from other conditions (scleroderma, morphea) and informs treatment options. The rarity of this condition means individual treatment decisions are often based on case reports rather than randomized trials. See our broader diabetic dermopathy guide for context on diabetic skin conditions.
