thrombocythemia
"I am on Hydrea due to Ediopathic Thrombocytopenia with platelet counts over 2 milion. I am very young (21) and taking Hydrea for 1 year and a half now. 
Though it has sinked my platelets I have recurrent anemia and infections (most recently in the lungs).
In the beginning I was very tired, legs shook, skin would easily bruise, drugged up feeling from time to time, depressive, muscle pain, burning in legs which was severe and decreased after 5 months, brain fog, stomach pain (still common).
Most common symptom would be enlarged spleen with pain.
I've had brutal neurological side effects that have been decreasing slowly with time. Nevertheless, Hydrea compared to Anagrelid and Interferon is by far the medicine I tolerate better. "