I’ve been experiencing bizarre pins and needles in mostly my right arm and both legs/feet as well as a strange skin oversensitivity that I’ve experienced only a couple times before (pretty sure these were times when I stopped my multivitamin). The pins and needles started a week after stopping absolutely everything (except magnesium), and shortly after angular cheilitis showed up as well. Could a b12 deficiency show up in a matter of days of stopping my b12? How long would it take symptoms to go away after starting up again? I’m nervous about going too high because I’ve triggered some crazy things recently that resulted in ER trips and terrible terminal insomnia resulting in 3 hours sleep a night which results in me getting sick every time. This next question I hope I describe correctly: if b12 causes paresthesia, does the tingling show up randomly, or in areas more prone to it? In other words, I believe I have very tight muscles from working out and it’s easy for them to start to fall asleep. When these symptoms kicked off, my left arm was doing it too but after stretching (shoulder rehab, due to impingement syndrome) my left is fine now and it only happens in my right arm. Is that how paresthesia works or is it definitely only due to impingement and tight muscles? Thanks! Any advice or any thoughts or experiences welcome! I’m currently taking 10mg p5p, 200mcg methylfolate and 300mcg b12 as of today and yesterday.