What is a hallmark characteristic of hemophilia?

Hemophilia is primarily characterized by a deficiency in specific clotting factors, leading to an increased tendency for bleeding. One of the hallmark manifestations of this bleeding disorder is hemarthrosis, which refers to bleeding into the joints. This condition typically results in pain, swelling, and limited movement, and is a distinctive feature of hemophilia, particularly in severe forms of the disorder.

The occurrence of hemarthrosis makes the condition immediately apparent during activities that may cause injury, even with minor trauma, and plays a critical role in the clinical management and diagnosis of hemophilia. Monitoring joint health and managing episodes of joint bleeding are essential components of care for individuals with this disorder to prevent long-term damage and joint complications.

Other options refer to different characteristics or misconceptions about hemophilia. For instance, while daughters can be carriers if their father is affected, it does not imply that they have the condition. The disorder is not located on the Y chromosome, as it is linked to the X chromosome, and hemophilia A is primarily associated with a deficiency of factor VIII, not factor VII.