I’m sure you’ve all been confronted with the issue of "pre-existing conditions." In traditional context, when the injury reported from the accident is being disputed as “pre-existing,” sometimes it can be beneficial to do more investigation. Often times, it warrants looking further back, even more than a year or two before the auto accident, into the plaintiff's medical history to identify a true pattern.
Another significant pre-existing condition impacting recovery is diabetes. A person with diabetes, over time, will develop vascular insufficiency or poor circulation. If they are injured and develop a significant wound, they are at risk for poor wound healing as a result of the decrease in blood supply to oxygenate and ultimately heal the injured tissue. Again, it may require more time and treatment (supplies, medicine, office appointments, etc.), not to mention the added pain and suffering involved with wound care treatments, to recover and thus, increasing the settlement value.