Please share what meds you have taken so far?
Get
complete blood count,
thyroid function tests, blood
sugar, serum d3,
b12, proteins,
calcium, serum
electrolytes, done and share results.
For muscle pains you can take tab flexon m.r one morning and one evening for 5 days, after meals.
For neuropathy, tab neurobion forte one daily for 8 weeks,
Tab pregabalin 150mg one morning and one evening for 14 days.
For orthostatic hypotension, drink more fluids, like salted buttermilk, lemonade.
Avoid sitting for a long time with legs down, while sleeping,keep legs slightly elevated for an hour or so.
For flu symptoms and headache, take tab sinarest one every 8hours for 4 to 5 days, regular steam inhalation with karvol capsule, 2 to 3 times daily.
For vestibular dysfunction, consult ENT specialist physically.
For headache, get eyes checked and C.T. scan brain done, share results.
Once pain is reduced, start regular light physical exercise like yoga, walking. Do it, slowly, upto your comfort level, increase duration gradually.
Start doing regular pranayam, which you can easily do even while sitting on bed.