List of diseases that include pyrexia as a symptom. Any major, well-known medical conditions associated with pyrexia are included below, listed alphabetically with photos when available. Any maladies, sicknesses or illnesses with pyrexia as a symptom can be seen below. For any real, further diagnosis of something you feel you might have, please consult a doctor. This list includes information about each disease, such as what risks are associated with it. These illnesses, like HIV and Heart Disease include images when available.This list answers the questions, "What risks are associated with pyrexia?" and "What disease can I have if I have pyrexia?"