<s>[INST] My son has itp, and has had it for a couple of years now. Recently his count has dropped and he has symptoms. Today a bad headache started and we took him to the local hospital, they did a ct scan and found bleeding , currently he is on his way by helicopter to calgary childrens hospital for treatment. How dangerous of a situation is this, and is it common. What is generally the outcome of my situation? [/INST] Hello, welcome to Chat Doctor, The situation is very much dangerous. The prognosis sometimes becomes very bad. Here first priority should be given to give him platelet as early as possible. It is a medical emergency.  I don't know., when you came to know, that his platelet count is decreased? If you had the report earlier, and you could take him to hospital for platelet transfusion early. That could avoid the situation.  Whatever, hope for the best. </s>