Definition: The word "acanthocephalous" comes from Greek. It describes a person with an unusual hair color (usually blue) and a nose that does not grow out completely. This characteristic is usually associated with certain conditions, such as hemophilia or cystic fibrosis. Here are some of the most common explanations for this term: - Hemophilia: In this rare genetic condition, a person has abnormal blood type in their red blood cells, leading to problems with clotting and bleeding. Acanthocephalus is a symptom of the disease. - Cystic fibrosis: This genetic disorder affects the lungs and causes thick and yellowish mucus in the lungs. It can also cause frequent coughing fits and difficulty breathing due to swelling in the chest. The condition often leads to lung failure. So, if someone has acanthocephalous hair color, a nose that does not grow out completely (usually blue), and other symptoms of hemophilia or cystic fibrosis, they may have these characteristics associated with them.