Hello! This is not a very cheerful topic, but I'd be very appreciative if anyone can share their experience.
I began taking Cimzia (a biologic) for my Ankylosing Spondylitis (AS) in December 2021. I was warned that multiple sclerosis (MS) was a possible side effect of the biologic. I have no family history of MS, so the side effect was considered unlikely for me.
Pre-biologic, my AS-related pain was focused to the SI joints. After beginning the biologic treatment, I noticed a reduction in SI joint-related pain. However, I also experienced newly developed lumbar, thoracic and cervical joint pain that has only gotten worse. I have not had a pain-free day since mid-February and most recently, I have been experiencing peripheral joint and nerve pain, primarily in my right elbow, hand and knee. I've also been fatigued and anxious.
Immediately my mind jumps to biologic-induced MS. I have appointments set up with my GP and rheumatologist, but I'm curious to know, has anyone on this forum who has started a biologic developed MS consequentially? Conversely, have you had AS-related symptoms that sounds like the above?