In fact, my lymphocytes took almost a year to recover to low ‘normal’ levels. My neurologist thought this period of low lymphocytes paradoxically was still protecting me against relapses. Because the lymphocytes are a type of white blood cell that are responsible for hammering the myelin in an MS relapse.
I stopped Tecfidera in November 2015. My lymphocytes remained at best 0.6 until October 2016 when they reached the heady heights of 1. Which is normal, just. I then had a blip in February last year when the lymphocytes dipped again to 0.2 which was followed in May by a relapse. And up until recently it had been thought that I’m SP. I’m now confirmed as PR.
So it’s possible that if lymphocytes recover quickly after stopping Tecfidera, then a rebound relapse is likely. But as my lymphocytes didn’t recover for months and months, the relapse I had in December 2015 couldn’t have been exactly a ‘rebound relapse’. (Just checked my diary, it was a definite relapse, I took the steroids and it got better.) Or at least, not connected with lymphocytes.
Personally I’ve made an arrangement with my GP to get some steroids as soon as I think I am starting a relapse (after testing wee to be sure there’s no UTI). Maybe if you are relapsing, you should approach your GP for steroids.