I've been to hell and back with constant single digit platelets, all the symptoms, all the treatments and a splenectomy, none of which worked. My specialist just about gave up on me.
I did yet more reading and found stuff about viruses such as Epstein Barr and bacterias such as H-pylori that can be the cause of ITP but they're not well known about. I took the idea to my specialist who is open minded, I tested positive for h-pylori. 2 weeks of antibiotics, and a week after, my platelet count is 160. I know, early days but it looks really promising and is such an easy fix - crazy its not a routine test I feel amazing!
Let me know if you've been fixed so simply.