Under Iowa law a worsening of a preexisting condition is treated the same as a new injury. If this work injury makes your previous condition worse in terms of pain, severity, or frequency, you would still be able to obtain Workers' Comp benefits. Be prepared that your employer and their insurance company will try to argue that your current condition is related to your prior problem. However, the medical testimony can typically establish that this worsening of your condition has occurred because of a work injury. For example, if you had a bad back and a thorough medical examination reveals that your back problem has been aggravated or made worse by your work activities. This would qualify you to receive benefits.