How old is your father? What are other comorbidities is suffering from? What investigations has been done till now? Is he having any history of fall? Is there any such episodes previously he had? You can have a detailed discussion in this regard with his investigations which ever are available. You can Do a video call or voice call as per your comfort.
Next Steps
He needs to avoid any jerky movements of neck
Health Tips
This might be due to certain changes in his cervical spine or in brain. Needs to be evaluated