In theory, a pre-existing condition should not influence your claim, as you would be entitled to compensation for any injuries sustained in the accident. If your injuries are more severe and your financial damages are higher because the accident aggravated a pre-existing condition, you would still qualify for adequate compensation.For example, a car accident victim with brittle bone disease may break several bones in an accident. The defendant or insurance must compensate the victim for the fractures even though a healthy individual may not have suffered any broken bones in the accident.However, in practice, claims involving pre-existing injuries can be complex, and an insurance company may use a pre-existing condition to reduce your compensation. In this case, having an experienced and dedicated attorney by your side who can argue your case strongly can be critical for the outcome of your claim.