Haemophilia is a blood disorder in which the necessary proteins required for clotting are absent. Since it can’t be seen, it is classified as an invisible disability. Nevertheless, some symptoms of haemophilia, such as bruising, bleeding and swelling of joints are visible. Some other invisible disabilities are ADHD, autism, diabetes and chronic fatigue syndrome.
World Hemophilia day was established by the World Federation of Hemophilia on April 17, 1989. This is a serious effort as with increased awareness comes better diagnosis, judgment, and access to care for the millions who stay without treatment.
Here is a video that explains Haemophilia