Hemophilia A is a rare genetic disorder that affects the blood’s ability to clot properly. It is the most common form of hemophilia, responsible for 80% of all cases.

Hemophilia is a rare disorder in which the blood doesn’t clot properly, resulting in the disease’s hallmark symptoms of bleeds — excessive bleeding that extends over a prolonged period of time — that in turn leads to other complications.

Hemophilia is a disorder wherein the blood is not able to clot properly. As a result, patients bleed easily, and it's unusually prolonged and heavy.

Although no cure for hemophilia is currently available, a number of therapies can be used to control bleeding and other symptoms. These treatments can substantially increase life expectancy by lowering the risk of life-threatening complications such as bleeding in the brain, especially in people with severe hemophilia.

Deciding whether to tell your employer you have hemophilia can feel overwhelming, especially if symptoms affect your work. Learn about your legal protections, how to request reasonable accommodations, and practical steps to prepare for a confident, solution-focused conversation.

While hemophilia A and hemophilia B are both bleeding disorders characterized by deficiencies in blood clotting factors, there are differences in one type versus the other, particularly in the specific genetic mutations that cause the disease, and in some of the treatment methods.

Hemophilia C is a rare bleeding disorder that affects the blood’s ability to clot.