Most people who suffer concussions recover within a week or 10 days, but up to a third of people may have a more complicated recovery. Upstate rehabilitation psychologist Angelina Rodner, PhD, explains that headaches, dizziness, visual problems and emotional disturbances may signal that recovery will be prolonged. Depending on the injury that caused the concussion, she says a person may grapple with anxiety and/or post-traumatic stress disorder. This can complicate treatment, recovery and outcome. Rodner is a clinical psychologist and a member of the Upstate Concussion Center team.