Hi all, before the question itself I would introduce my case as I'm new here. I suffer from severe tiredness, muscle/joint pain and muscle weakness as well as many other neurological symptoms. It all started one and a half years ago after blood donation. I had severe tiredness for almost a year and then the other symptoms appeared gradually. My condition is getting worse and worse.
I have been checked by many doctors and had many lab tests and MRIs. All came back clear except LYMP abs a bit low (1.37). They don't really know what I have thought one reumatologist suspects it may be CFS/ME. I'm about to see my GP this week and ask her to run PA tests for me. My last b12 blood test results (on March) were 191pmol/L (200-900) and my Endocrinologist assumes that my symptoms could be explained by the b12 deficiency (I also have sub-clinical Hashimuto for years) but she does not sure about that.
In the meantime I used sublingual b12 tabs for a week without any effect and I got the first cyanocoblamin 1000mcg injection today afternoon. Now at night I feel horrible, anxious, weaker and about to faint, my muscles are weaker and painful.
I have noticed in previous posts here that many patients feel worse after the first injection but does this mean that the b12 deficiency truly explains my neurological symptoms? or not necessarily?
MS is probably not the case as my head MRI came back normal neither MG as Acetylcholine receptors were negative. Could be other frightening Neuro-illnesses though (ALS?).. CFS/ME doesn't seem to be as I hadn't any virus or flu before it all started. So once again I would like to understand whether the adverse effect of my b12 treatment implies that the symptoms are caused by the deficiency of the vitamin. I would also welcome any general suggestion to explain my symptoms.