Some patients arrive with a pain we can map: one movement, one joint, one story. Others arrive with aches that are everywhere and nowhere, bones that feel tender, legs that feel heavy on stairs, fatigue out of proportion to life, and a folder of normal X-rays.
For that second pattern, one question earns its place in every assessment: when did you last have your vitamin D checked?
The Indian paradox
India receives abundant sunshine and has some of the most widespread vitamin D deficiency in the world. Study after study puts deficiency at well over half of urban Indians, with many estimates far higher. The reasons stack: indoor working lives, sun avoided at its useful hours, covering clothing, air pollution filtering the wavelengths that matter, and darker skin needing several times longer sun exposure to make the same vitamin D as lighter skin.
The result is that in Bengaluru's IT corridor, low vitamin D is closer to the default than the exception, and most people who have it feel either nothing or something maddeningly vague.
How deficiency shows up in the body
Vitamin D governs calcium absorption, which makes it a bone mineral hormone, and it acts directly in muscle. Run low for long enough and both tissues complain:
- Diffuse, symmetrical aching, low back, hips, thighs and ribs more than joints
- Bone tenderness, a shin or breastbone that hurts when pressed
- Proximal muscle weakness: thighs and hips first, so stairs, squatting to the floor and rising from low chairs feel disproportionately hard
- Fatigue that sleep does not repair
- Cramps and twitches, one of several culprits behind night leg cramps
- In severe, prolonged cases, osteomalacia, softened bone that aches at rest and fractures easily, and in the elderly a genuine contribution to falls risk
Notice what is not on the list: one specific joint hurting with one specific movement. That pattern is mechanical and we treat it. The everywhere and nowhere pattern deserves a blood test before anyone spends months massaging it.
Physiotherapy cannot exercise a mineral deficiency away, and vitamin D cannot strengthen a weak muscle by itself. Plenty of people need both fixes at once.
What to actually do
Ask for the test rather than guessing. It is a simple, widely available blood test (25 hydroxy vitamin D), often bundled cheaply into health panels. Testing matters because the fix is dose dependent: genuine deficiency needs prescription strength correction for a set period, not a random supplement bought on instinct.
Treat with your doctor, not with megadoses. Correction protocols in India typically use weekly high dose supplementation for a couple of months, then a maintenance dose. This is a medical decision: vitamin D is fat soluble and accumulates, and very high self prescribed doses cause genuine harm. More is not better; corrected is better.
Give sunlight a real chance. Twenty to thirty minutes of sun on forearms and face a few times a week, outside peak burn hours, is the free maintenance dose. A morning walk solves two problems at once.
Rebuild the strength the deficiency cost you. This is where physiotherapy re-enters. Months of weak, aching muscles leave a strength deficit that persists after blood levels normalise. Simple progressive work, sit to stands, glute bridges, step ups and the rest of our exercise library, converts the corrected chemistry back into capable legs.
See a doctor promptly if
Aches come with fever, unexplained weight loss or night sweats, a bone hurts sharply at rest or after minimal injury, weakness is progressing quickly, or symptoms persist despite corrected vitamin D levels. Diffuse aching has other causes too, thyroid problems, anaemia and inflammatory conditions among them, and they share the same first step: a proper look, not a stronger painkiller.
If your pain has a map, come to us. If it seems to have no map at all, ask for the blood test first. It is one of the few causes of widespread pain with a fix this cheap, this measurable and this complete.