It definitely can. Commonly employees need to show that a work accident is the major contributing cause of the need for treatment, however, some types of issues including repetitive trauma and psychiatric needs must be shown by clear and convincing evidence. Depending on your situation, your employer’s insurance company may choose to begin providing medical coverage while simultaneously launching a 120 day investigatory period to determine whether or not your work injury is the largest cause of your need for treatment. If you have a preexisting condition, give us a call at 386-222-6677 to discuss how you should navigate this complex and uncertain legal issue with a workers’ compensation lawyer.