How does diabetes affect the hands? A 2025 review in Diabetes Care says that conditions of the hand and arm happen two to three times more often in people with diabetes than in people without it. The most common are carpal tunnel syndrome, trigger finger, stiff fingers, and Dupuytren's contracture, which is a thickening in the palm that can pull a finger toward the hand. They are most often found between ages 40 and 70, they become more common with age and with longer diabetes, and one person often has more than one. The reasons are not fully settled, and most of the research is observational, so it shows links and not proof of cause.
Key takeaways
- The 2025 review reports these hand and arm conditions are two to three times more frequent in diabetes, and the authors say most data come from Europe and Asia, with few from other regions.
- Rates differ a lot between studies. Carpal tunnel is reported at 10% to 14% in diabetes versus 3% to 5% in the general population, and trigger finger at 10% to 12% versus 2% to 3%.
- A suggested reason is long-term high blood sugar changing collagen, the protein in tendons and the tissue around them. The reviews call this a hypothesis.
- Research reviews say better blood sugar control may prevent or delay these problems, but it does not reverse them once they are in place.
- A steroid shot into a hand or wrist can raise blood sugar for days. Tell the clinician you have diabetes before the shot and ask what to check.
- Sudden numbness or weakness in the face, arm, or leg, especially on one side, is a possible stroke sign. Call 911.
Diabetes and the Hands: The Short Answer
- Hand problems are more common with diabetes. Several different problems are involved, each with its own cause and care.
- They often come together. In one group of people with type 1 diabetes, 33% had two or more of them.
- Having one does not mean you did something wrong. The reviews describe links, and the causes are still being studied.
- Most are treatable. Splints, exercises, injections, and surgery all have a place, and a hand specialist helps choose among them.
- A hand symptom needs a real exam. Numbness, catching, stiffness, and lumps have different causes, and several look alike.
Five Hand Problems Linked to Diabetes
| Problem | What it can feel like | Reported in people with diabetes | Reported in the general population | Guide |
|---|---|---|---|---|
| Carpal tunnel syndrome | Tingling or numbness in the thumb, index, middle, and part of the ring finger, often worse at night | 10% to 14% | 3% to 5% | Carpal tunnel and diabetes |
| Trigger finger | A finger or thumb that catches, clicks, or locks when it bends | 10% to 12% | 2% to 3% | Trigger finger and diabetes |
| Stiff hand (limited joint mobility) | Painless stiffness, tight waxy skin on the back of the hand, trouble spreading the fingers or pressing the palms flat | Varies widely (see below) | Varies widely | Diabetic stiff hand syndrome |
| Dupuytren's contracture | Lumps and cords in the palm, with a finger that slowly bends toward the hand | 18% in a pooled analysis | 6% in the same analysis | Covered in this guide |
| Ulnar nerve entrapment | Tingling in the ring and little fingers | About 2% | Not stated in the review | Mentioned in the numbness guide |
The first two rows and the last row come from the 2025 Diabetes Care review by Braffett and colleagues. The Dupuytren's figures are the pooled analysis the review cites. The authors note that a Swedish register found ulnar nerve problems three to four times higher in diabetes.
Other reviews report wider ranges. A 2022 review in the Korean Journal of Internal Medicine lists carpal tunnel at 14% to 30% in diabetes, trigger finger at 5% to 20%, Dupuytren's at 16% to 42%, and stiff hands at 8% to 58% in type 1 and 25% to 76% in type 2. Those spreads are large because studies counted cases in different ways, studied different groups, and used different tests. Treat all of these as rough ranges and not as your own odds.
Frozen shoulder is another diabetes-linked problem in the arm. It is covered in our guide to diabetes and joint pain.
Why Would Diabetes Affect the Hands?
No one knows the full answer. The 2025 review says the causes are not fully understood. The main idea it describes is that long-term high blood sugar attaches sugar molecules to collagen, a process called glycation. Collagen is the protein that makes up tendons, tendon sheaths, ligaments, and the skin's deeper layer. The idea is that glycated collagen turns stiffer and thicker, which could crowd tendons and nerves in tight spaces such as the wrist and the base of each finger. The Korean Journal of Internal Medicine review adds that inflammation may play a part, and that these hand problems and tiny-blood-vessel complications tend to go together.
These are proposed explanations. They help organize the research, and they have not been shown to be the whole story. The same review says Dupuytren's is related to older age, longer diabetes, male sex, smoking, and alcohol use.
They Often Come Together
The review says hand and arm conditions tend to appear together. Among people with type 1 diabetes in one cohort, 33% had two or more of these conditions and 13% had three or more. After 50 years of type 1 diabetes, 94% had at least one, compared with 4% of people without diabetes. Carpal tunnel is often paired with trigger finger, frozen shoulder, or ulnar nerve entrapment.
Two cautions go with those numbers. Most of this research is in type 1 diabetes, and there is less for type 2. The figures also come from specific groups, so they do not predict what will happen to you. If you have one hand problem, it is reasonable to mention any others to the clinician.
Where Dupuytren's Contracture Fits
Dupuytren's contracture is a slow thickening of the tissue under the skin of the palm. People first notice lumps in the palm, which may be tender. Over time, firm cords can form, and a finger, most often the ring or little finger, bends toward the palm and cannot be fully straightened. The main problem is a bent finger, which sets it apart from carpal tunnel, where the main problem is numbness.
A 2018 pooled analysis in Plastic and Reconstructive Surgery found the odds of Dupuytren's were about three times higher in people with diabetes (odds ratio 3.06, 95% confidence interval 2.69 to 3.48, adjusted for age). That analysis found the link was stronger in type 1 than in type 2, but the difference was not statistically significant. A 2023 study in Communications Medicine using a large records database reached a different answer on type, finding Dupuytren's more common in type 2 than in type 1. So the research does not yet agree on which type carries more risk.
The treatments described in the reviews include steroid injections for tender nodules, collagenase injections, needle procedures, and surgery. The Korean Journal of Internal Medicine review notes that recurrence after surgery is more frequent in people with diabetes. Choosing among these is a decision for a hand specialist, based on how much the finger is bent and how it affects daily tasks.
What Blood Sugar Has to Do With It
The research on blood sugar and hand problems shows associations. A 2022 Swedish register study in Diabetes Care followed 9,682 people with type 1 diabetes and 85,755 with type 2 diabetes, and found that a higher HbA1c went with a higher chance of trigger finger in both groups. The Korean Journal of Internal Medicine review says strict blood sugar control may prevent these complications or delay their progress, but cannot completely reverse them, and no treatment that reverses the underlying changes is yet available.
These findings do not mean hand symptoms are a sign of poor management. Hand problems also happen in people with well-controlled diabetes, and they happen in people who do not have diabetes at all. For the testing side of the story, see our guide to what A1C numbers mean.
Steroid Shots and Blood Sugar
Steroid injections are one treatment for several of these problems. The 2025 review notes that steroid injections can raise blood sugar for a few days in people with diabetes, so glucose should be monitored closely. The American Academy of Orthopaedic Surgeons (AAOS) says that after a steroid injection for trigger finger, blood sugar typically rises for about 10 to 14 days in people with diabetes who take insulin. The two sources give different time spans, so ask the clinician for the plan that fits you.
Before any steroid shot, tell the clinician you have diabetes and which medicines you take. Ask what to check, how often, and when to call. Our guide to prednisone and blood sugar explains the same effect for steroid tablets.
Everyday Tasks With Sore or Stiff Hands
Stiffness, weak grip, and numb fingertips can make buttons, jar lids, writing, and handling small items harder. Ask whether a hand specialist or hand therapist could suggest exercises, splints, or tools that make tasks easier. Numb fingers can also hide injuries, so check the skin after tasks where a cut or burn could go unnoticed. Our guide to cuts and scrapes with diabetes covers wound care.
When to Get Help
Call 911 for sudden numbness or weakness in the face, arm, or leg, especially on one side of the body. The Centers for Disease Control and Prevention (CDC) lists this among stroke signs, along with sudden trouble walking, seeing, speaking, or understanding speech, and sudden severe headache. Do not wait to see if it passes, and do not drive yourself.
Make an appointment soon for any of the following:
- Numbness or tingling that keeps coming back, or wakes you at night
- A finger that locks and will not straighten, or that you must straighten with the other hand
- A thumb that feels weak, or the muscle at the base of the thumb looking smaller (AAOS says in long-standing carpal tunnel syndrome with constant numbness and thumb muscle wasting, surgery may be recommended to prevent permanent damage)
- Lumps or cords in the palm, or a finger that is slowly bending
- Stiffness that makes it hard to press your palms together or lay your hand flat on a table
Seek same-day advice for a hand or finger that becomes red, hot, swollen, or draining, or for a wound you did not feel.
Questions to Ask Your Care Team
- Which hand problem do my symptoms fit, and what else could cause them?
- Do I have more than one, and should a hand specialist look at all of them?
- If a steroid shot is suggested, what should I check, and for how long?
- Would a night splint, exercises, or hand therapy help me first?
- Which eye, kidney, and nerve checks am I due for? The Korean Journal of Internal Medicine review says tiny-blood-vessel complications should be looked for when these hand problems are present. Our guide to yearly diabetes tests lists them.
- Which changes should make me call sooner?
Frequently Asked Questions
How does diabetes affect the hands?
A 2025 review says hand and arm conditions occur two to three times more often in people with diabetes. They include carpal tunnel syndrome, trigger finger, stiff fingers, and Dupuytren's contracture. The reasons are not fully understood, and the reviews describe associations and not proof of cause.
Can diabetes cause stiff fingers?
Yes, it can be associated with stiff fingers. Limited joint mobility, also called diabetic stiff hand syndrome, is usually painless and may include tight, waxy skin on the back of the hand. Other conditions such as arthritis can look similar, so a clinician needs to examine the hand.
Does diabetes cause Dupuytren's contracture?
Studies find Dupuytren's contracture is more common in people with diabetes, with odds about three times higher in one pooled analysis. That shows a link and not a cause. Researchers do not yet agree on whether type 1 or type 2 carries more risk.
Can better blood sugar control fix hand problems?
Research reviews say strict blood sugar control may prevent these complications or delay their progress, but it cannot completely reverse them. Ask your care team what is realistic for your own hands.
Is a steroid shot safe if I have diabetes?
Steroid shots are used for hand problems in people with diabetes, but they can raise blood sugar for days. Tell the clinician you have diabetes before the shot and ask what to check afterward.
When is a hand symptom an emergency?
Sudden numbness or weakness in the face, arm, or leg, especially on one side, can be a stroke sign and needs a 911 call. A hand that becomes red, hot, swollen, or draining needs same-day advice.
References
- Braffett BH, Berg TJ, Zimmerman M, et al. "Upper-Limb Complications in Diabetes: A Narrative Review." Diabetes Care. 2025;48(11):1865–1874. Accessed November 2026.
- Choi JH, Kim HR, Song KH. "Musculoskeletal Complications in Patients with Diabetes Mellitus." Korean Journal of Internal Medicine. 2022;37(6):1099–1110. Accessed November 2026.
- Broekstra DC, Groen H, Molenkamp S, Werker PMN, van den Heuvel ER. "A Systematic Review and Meta-Analysis on the Strength and Consistency of the Associations between Dupuytren Disease and Diabetes Mellitus, Liver Disease, and Epilepsy." Plastic and Reconstructive Surgery. 2018;141(3):367e–379e. Accessed November 2026.
- "The prevalence of Dupuytren's disease in patients with diabetes mellitus." Communications Medicine. 2023. Accessed November 2026.
- Rydberg M, Zimmerman M, Gottsäter A, Eeg-Olofsson K, Dahlin LB. "High HbA1c Levels Are Associated With Development of Trigger Finger in Type 1 and Type 2 Diabetes: An Observational Register-Based Study From Sweden." Diabetes Care. 2022;45(11):2669–2674. Accessed November 2026.
- American Academy of Orthopaedic Surgeons. "Trigger Finger." OrthoInfo. Accessed November 2026.
- American Academy of Orthopaedic Surgeons. "Carpal Tunnel Syndrome." OrthoInfo. Accessed November 2026.
- National Institute of Diabetes and Digestive and Kidney Diseases. "Focal Neuropathies." Accessed November 2026.
- Centers for Disease Control and Prevention. "Signs and Symptoms of Stroke." Accessed November 2026.
Next Steps
If you notice numbness, catching, stiffness, or lumps in a hand, write down which fingers are affected, when it happens, and which tasks are harder. Bring the notes to your next visit and ask whether a hand specialist should look. Call 911 for sudden numbness or weakness, especially on one side.
For adults with type 2 diabetes or prediabetes who want lifestyle education alongside clinical care, the Done With Diabetes™ program, a holistic approach to type 2 diabetes, organizes learning about meals, movement, sleep, and stress. It does not diagnose or treat hand conditions or diabetes, interpret symptoms or test results, change medicines, or replace your care team.