Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Immune Thrombocytopenia? ?
    ### Response:
    Immune thrombocytopenia (ITP) is a fairly common blood disorder. Both children and adults can develop ITP.
                
Children usually have the acute (short-term) type of ITP. Acute ITP often develops after a viral infection.
                
Adults tend to have the chronic (long-lasting) type of ITP.
    