<s>[INST] Last winter I fell and hit my head on concrete.  I now have a flat spot about 3 inches round on the back part of my head.  I suffered from Vertigo a while later and required medication and now a year later having episodes of Vertigo again.  Is this from the fall? [/INST] Hello! Thank you for asking on Chat Doctor! Regarding your concern, I would explain that your symptoms do not seem to be related to the bump on your head. They could be explained by an inner ear disorder like Benign Paroxysmal Positional Vertigo. For this reason, I would recommend consulting with an ENT specialist for a careful physical exam and labyrinthine tests. If an inner ear disorder is excluded the next step would be performing a brain MRI. Hope to have been helpful! Kind regards,  </s>