Although I’ve been on Simponi Aria for my PsA for more than a year now and overall I feel better but there are times that some symptoms come back and from time to time my family doctor has put me on B12 shots, now my blood work came back and is low on B12 and for a while my peripheral neuropathy has gotten worse, even my face is tingling, skin feels like I have a mild sunburn and a new symptom that I never had is I get flashes of hot spots on my skin, random areas on my body that feel like I got close to a heat source, achy joints, pin and needles that just pop up anywhere, sore neck, constant but mild ache on the back of my head, stiff neck random flashes of light at the bottom of my right eye as well as dry and itchy and other symptoms that just come and go, although only two other items on my blood work came one high and one low the rest was normal and I keep looking at some articles that suggest that all of this symptoms have to do with just having low B12, I’m starting to wander if I have another autoimmune disorder hiding behind all this or its just a flare up.