Hello Dr, I m recently feeling continuous tingling and mild pressure sensations in extremeities(mainly fingers of feet n biceps) that starts early morning, today I felt some tingling in lips also. I am a healthy male with no past medical history, but on Vit12 IM injections which is prescribed by a doctor due bcoz of low vit 12 blood levels, also usually when I sit in chair without cushions it cause numbness in perineum area. Plz help.