Quick answer
Mild vitamin D deficiency usually causes no pain. Severe, long-standing deficiency can cause osteomalacia, with diffuse bone pain (back, pelvis, legs), muscle weakness and bone tenderness. Pain in one specific joint with stiffness and creaking is usually osteoarthritis or a joint problem, which vitamin D alone does not treat. Blood tests — vitamin D, calcium, phosphate and alkaline phosphatase — settle the question.
✅ Last medically reviewed by Prof. Dr. Ibrahim Shaarawi, Professor of Orthopaedic Surgery, on 5 October 2026
“I have low vitamin D, so that is why my bones hurt” is something I hear daily. Sometimes it is true; often the deficiency is incidental and the pain has another, untreated cause. This article explains when vitamin D is responsible and when it is not, as part of our guide to vitamin D deficiency.
How does vitamin D deficiency cause bone pain?
Vitamin D is needed to absorb calcium and phosphate. With severe, prolonged deficiency, new bone is poorly mineralised and a soft layer forms beneath the nerve-rich periosteum, making bone tender, especially on pressure and standing. Deficiency also weakens muscles, particularly around the hips and thighs.
A Mayo Clinic Proceedings study of patients with persistent, non-specific musculoskeletal pain found vitamin D deficiency to be strikingly common among them. But that does not mean every ache is due to vitamin D: a Cochrane review found no consistent evidence that vitamin D supplements relieve chronic pain in general among people without severe deficiency.
Symptoms of vitamin D deficiency in bones and muscles
- Deep, diffuse pain in the lower back, pelvis, thighs and legs.
- Tenderness when the shin or ribs are pressed.
- Weakness when rising from sitting or climbing stairs.
- Fatigue and muscle cramps.
- Tingling around the mouth and fingers if calcium falls.
- Fractures after minor strain in severe cases.
Video: aches in all your bones and joints?
How to tell vitamin D pain from other causes
| Condition | Pain pattern | Distinguishing features |
|---|---|---|
| Osteomalacia (severe vitamin D deficiency) | Diffuse bone pain, worse on standing | Thigh weakness, bone tenderness, abnormal blood tests |
| Osteoarthritis | One or a few joints (knee, hip) | Worse with use, better with rest, short morning stiffness, creaking |
| Rheumatoid arthritis | Small joints of hands and feet on both sides | Swelling and warmth, morning stiffness over an hour |
| Fibromyalgia | Widespread muscle pain | Tender points, poor sleep, fatigue, normal tests |
| Osteoporotic vertebral fracture | Sudden back pain | After bending or a minor fall, height loss |
Tests you may need
- 25-hydroxyvitamin D.
- Calcium, phosphate and alkaline phosphatase (ALP).
- Parathyroid hormone when vitamin D or calcium is low.
- Kidney function, full blood count, and ESR or CRP if inflammation is suspected.
- Thyroid function when fatigue and muscle weakness are prominent.
- X-rays of the painful area and a bone density scan when needed.
A raised ALP with low vitamin D and phosphate points to osteomalacia, while normal tests with localised joint pain point to a mechanical cause.
Key numbers to know
- In a Cochrane review of 10 studies (811 patients), vitamin D showed no consistent benefit for chronic pain in general (Straube et al., Cochrane 2015).
- In a study of Egyptian women of childbearing age, 43% were vitamin D deficient and 13% insufficient; only 44% had normal levels (Gerges et al., 2021).
- In the VITAL trial of 25,871 people followed for 5.3 years, vitamin D alone did not reduce fractures in people without deficiency or osteoporosis (LeBoff et al., NEJM 2022).
| Treatment | When we use it | Notes |
|---|---|---|
| Daily or weekly oral vitamin D3 | Mild deficiency or prevention | The safest and most reliable way to raise levels |
| A treatment course for a set period | Clear deficiency on the blood test | Your doctor sets the dose and repeats the test after 8–12 weeks |
| Vitamin D injection | Malabsorption or difficulty taking tablets | Not routinely given to older adults without a reason |
| Treating the cause | Malabsorption, obesity surgery, medicines affecting vitamin D | Prevents the deficiency returning |
At Prof. Dr. Ibrahim Shaarawi’s clinics in Nasr City, Mohandeseen and New Cairo (5th Settlement) we review your vitamin D, calcium and bone density results and examine the cause of pain or fracture before deciding on the right dose or osteoporosis treatment.
Treatment
- Vitamin D at a treatment dose set by your doctor (daily or weekly tablets, or vitamin D injections in selected cases).
- Adequate calcium from food and supplements if needed.
- Physiotherapy and progressive strengthening of the thigh and back muscles.
- Simple pain relief for a short period if needed.
- Treating the cause: malabsorption, medicines, kidney disease.
When should the pain improve?
If the pain is due to osteomalacia it usually starts improving within 4–8 weeks of treatment and continues as bone remineralises. If vitamin D is corrected on testing but the pain persists, another cause is likely. Do not raise the dose yourself — excess vitamin D raises calcium and can harm the kidneys.
Red flags that need prompt review
- Persistent night pain with weight loss or fever.
- A hot, swollen joint.
- Pain after a fall or inability to bear weight.
- Severe weakness or numbness in the legs.
Frequently asked questions about vitamin D deficiency and bone and joint pain
Can vitamin D deficiency cause joint pain?
Severe deficiency mainly causes bone pain and muscle weakness that may be felt around joints. Pain in a specific joint with stiffness and creaking is usually osteoarthritis or a problem within the joint.
What are the bone symptoms of vitamin D deficiency?
Diffuse pain in the back, pelvis and legs, bone tenderness, muscle weakness and cramps, and in severe cases fractures after minor strain.
How long does bone pain take to improve after treating low vitamin D?
Usually 4–8 weeks if the pain is from osteomalacia. If it does not improve once levels are normal, look for another cause.
Can low vitamin D cause knee pain?
It may increase pain sensitivity and weakness around the knee, but chronic knee pain with creaking and stiffness is usually due to osteoarthritis or a cartilage injury.
Which tests find the cause of bone pain?
Vitamin D, calcium, phosphate, alkaline phosphatase, parathyroid hormone and kidney function, plus inflammation and thyroid tests and X-rays as needed.
To have your bones assessed and your tests reviewed, book a consultation, call +20 155 240 4488 or message us on WhatsApp at +20 155 554 7181.
Medically reviewed by Prof. Dr. Ibrahim Shaarawi, Professor of Orthopaedic Surgery. This article is general medical education and does not replace an examination or the treatment plan your doctor sets for you. See our medical disclaimer.
Related vitamin D and bone health guides
Related guides on vitamin D and bone pain:
- Vitamin D deficiency
- Vitamin D injections
- Osteomalacia
- Rickets in children
- Calcium injections for bones
- Vitamin D for infants and children
- The best vitamins for bones and joints
- Osteoporosis
References
- Plotnikoff GA, Quigley JM. Prevalence of severe hypovitaminosis D in patients with persistent, nonspecific musculoskeletal pain. Mayo Clin Proc. 2003;78(12):1463-70.
- Straube S, et al. Vitamin D for the treatment of chronic painful conditions in adults. Cochrane Database Syst Rev. 2015;(5):CD007771.
- Bhan A, et al. Osteomalacia as a result of vitamin D deficiency. Endocrinol Metab Clin North Am. 2010;39(2):321-31.
- Demay MB, et al. Vitamin D for the Prevention of Disease: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2024;109(8):1907-1947.