A patient presents to physical therapy following a concussio…
A patient presents to physical therapy following a concussion that occurred 4 months ago. Currently, the patient reports feeling of unsteadiness, particularly when standing or walking and riding in a car and dizziness described as non-spinning. They report feeling very anxious especially when being in a crowded environment. During the physical examination, the physical therapist observes a rigid body posture with minimal trunk movement when the patient attempts to balance on a tilting surface. Which of the following conditions is most likely contributing to the patient’s symptoms?