I've read people can have mood issues quite severely too with pernicious anemia. Over the past year or so I've developed severe mood swings, irritability, becoming more impatient, and even thoughts of losing it or going crazy. I'm not sure if its 100 percent from pernicious anemia but if it is how long after starting injections would these symptoms clear up? I've only very recently started my first injection since diagnosis even though I was diagnosed 2+ years ago. My doctor had me taking b12 supplements and I've always thought it wasn't enough as my usual deficiency symptoms were still present and my neurological symptoms were and still are terrible. As a reference my last labs showed b12 level in the 400s and folate was high. Not sure if that can indicate anything or not pertaining to my mood issues. I'm also not sure what type of Doctor I would see for my mood issues except a psychiatrist but if my issues are from pernicious anemia I'm not sure a psychiatrist is needed. Anyone have any advice on this? Thanks!