Hi welcome to HCM.... Yes as you are suspecting sometime trauma can lead to dizziness..... Here you might have peripheral vertigo that should be investigated through detail history , vestibular function test , ontological test , otoscopy etc.... According to cause suspected through examination , further treatment given like by antihistaminic promethazine tablet as vestibular suppresrnt. .... Bed rest given .... If labyrinthitis there you might need short term steroid use .... Avoid stress, smoking , alcohol ..... Get your blood pressure and sugar level checked .... Advise : ENT surgeon consultation... Take care