noun
hemophiliac
Medical term for a person with hemophilia. Neutral and factual.
彼は血友病患者なので、怪我に気をつけている。
He is a hemophiliac, so he is careful about injuries.
血友病 is the disease hemophilia; 血友病患者 is a person who has it.
Compound of 血友病 (hemophilia) + 患者 (patient).