S.C. Code § 40-45-30
A person shall not engage in the practice of physical therapy without a license issued in accordance with this chapter. A person who practices as a physical therapist or as a physical therapist assistant without being licensed under this chapter or whose license has been suspended or revoked or who uses in connection with his name the words or letters "PT", "Licensed Physical Therapist", "Physical Therapist", "Physio Therapist", "Licensed Physical Therapist Assistant", "PTA", or any other letters, words, or insignia indicating or implying that he is a physical therapist or a physical therapist assistant or who in any other way, orally or in writing or in print or by sign directly or by implication, represents himself as a physical therapist or physical therapist assistant without being licensed by the board is subject to the penalties provided for in this chapter.
S.C. Code § 40-45-30