WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms dizziness and feeling faint including Dehydration (Children), Sleep deprivation, and Heart rhythm disorder. There are 13 conditions associated with dizziness and feeling faint. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.