multiple sclerosis
"Diagnosed with MS April 2006 after getting double vision.  Started using Rebif August 2006. Experienced head aches and fatigue the day after a shot once I tritrated up to the full dose.  Was definitely more severe in the beginning, but lessened with time.  Ibuprofen has always worked best for me for managing the side effects.  2013 - found out I had Thyroid cancer, and had my thyroid removed.  I did not have to stop taking Rebif during this time.  Also, first new lesion presented on an MRI - that is 7 years with no remarkable change. September 2015 -- just found out my white blood cell count has dropped remarkably in the last 3 months (I get a Complete Blood Count and liver function done every 3 months, religiously) Probable side effect. Told to stop meds for 1 mo"