<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing vomiting and leg pain. Whats wrong with me?  <response>: You may be suffering from vertebrobasilar insufficiency, which is caused by a decreased blood flow to your brainstem and cerebellum due to a narrowing or blockage in your vertebral or basilar arteries. It can also cause other symptoms like dizziness, difficulty speaking, and vision problems. 