List of diseases that include lightheadedness as a symptom. Any major, well-known medical conditions associated with lightheadedness are included below, listed alphabetically with photos when available. Any maladies, sicknesses or illnesses with lightheadedness 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. Illnesses on this list include Cardiac arrhythmia and Myocardial infarction.This list answers the questions, "What risks are associated with lightheadedness?" and "What disease can I have if I have lightheadedness?"