What kind of effects on the rest of your body does hemophilia a have, aside from the blood problem?

Deep bleeding. The complications of this are due to the fact that the blood cannot clot as efficiently, and so there are a lot of instances of deep bleeding in muscle, joints, brain, leading to muscle pain and numbing, joint disfigurement and disruption, and brain damage and death. This last issue is how many hemophiliacs die. Infections from transfusions, and reactions to factor treatment are two others.