👉 Myxomatosis is a group of hereditary conditions characterized by persistent inflammation and pain in various organs, including the heart, lungs, bones, and skin. It can be caused by a variety of genetic mutations or environmental factors that lead to an overactive immune system. The symptoms of myxomatosis vary depending on the specific condition, but they often include fever, weight loss, fatigue, joint pain, and difficulty breathing. Myxomatosis is a serious medical condition that requires immediate attention