Hello. Thanks for asking from HCM. I can understand your concern. The persistent of dizziness even after 4 months of head injury needs evaluation. It could be due to :Head injury causing vestibular apparatus damage in internal ear, which is necessary for balance. It can get damaged if injury occurs directly to ear/fracture of temporal bone. If you are having any earache, ear discharge, history of ear injury or temporal bone fracture, involvement of it can be suspected. For management, you have to consult ENT specialist. He will do some tests to find out the degree of damage. He may prescribe medicine like beta-histine or Cinnarizine for relief. He will ask you to use broad base walk to avoid fall. Temporary damage will recover completely. Another good point is that opposite side normal vestibular apparatus will gradually take over all function. : Visual system - Vision helps us in judging distance, depth and thus walk and run. If you are having any kind of visual blurring or decreased vision, you should get your vision checked up. Glasses amy be needed to correct any kind of refractive error. : Cerebellum - Injury to occiput or upper neck area can cause injury to it. It controls balance in collaboration with vestibular system. Permanent damage to it lead to irreversible balance difficulty. It can be confirmed by few test like Nose-finger test, Romberg sign which will be done by neurologist. For relief, physiotherapy is needed to strengthen muscles, learn broad base walk, avoid dark areas. Support with stick may also help. It is less likely in your case as you are having intermittent difficulties. : Tracts in spinal cord - There are few tracts made up of nerves which are present in spinal cord. These tracts control over muscles of hand and foot and thus help in maintaining balance. Damage of these will manifest as weakness of limbs, tightness and balance difficulty. Spinning is usually absent. It is less likely in your case. So my final advice to you is consult doctor and get yourself checked for above mentioned system to reach upto some conclusion. MRI brain or CT head may be done to rule out old injury marks in brain. Further management will be decided according to the system involved. Hope it will help you. Thanks. Take care. Dr Ishu Bishnoi