S.C. Code Ann. § 42-11-50: Limitation on compensation payable to employee disabled by both injury and occupational disease.

When an employee suffers disability from an occupational disease and also from an injury which is otherwise compensable under this title, he shall not be entitled to receive compensation for both and benefits payable shall be limited to the cause which results in the longest period of disability, either as provided under this chapter or as provided for an injury by accident arising out of and in the course of employment. In no event shall compensation payable for disability or death exceed the maximum benefits provided under this title.