I have been experiencing persistent leg pain and fatigue since contracting dengue a year ago. Standing for more than five minutes worsens the pain, and stress, poor sleep or exercising increases it. Despite seeing multiple doctors, I have not found any relief. Currently, I am taking Meganeuron NT, Evion, and Juviana Plus and pain killer. So my pain in leg has been slightly better. My Vitamin B12 level has dropped from 400 in March to 262. I took one dose of Nurokind injection in March. Should I continue with B12 injections? If yes, how many should I take, and for how long? I’ve also developed pain in my upper back, neck, and fingers over the past few weeks. My neck pain has been an issue since 2006 with no effective treatment. Please help.