Illinois Code § 4

§ 4.

(a) No person shall undertake to treat cancer unless such person is licensed under the Medical Practice Act of 1987 to practice medicine in all of its branches or is licensed under The Dental Practice Act to practice dentistry or is licensed under the Podiatric Medical Practice Act of 1987 to practice podiatric medicine. However, the treating of a condition or disease before it is diagnosed as cancer does not constitute a violation of subsection (a) of this Section unless the practitioner knew or had strong reason to suspect that the condition or disease was cancer. (b) Any person who violates subsection (a) of this Section shall be guilty of a Class 4 felony. (c) The Attorney General or State's Attorney of the county where a violation of this Act has occurred shall have power to prosecute any violation of this Act and shall have power to maintain an action in the name of the people of the State of Illinois in the circuit court of such county for an injunction to enjoin any person from engaging in any practice which violates this Act. (d) Nothing in this Act shall apply to any person who, as an exercise of religious freedom, treats the sick or suffering by spiritual means through prayer alone, nor to any person, who, because of his or her religious beliefs, in good faith selects and depends upon spiritual means through prayer for treatment or cure of disease. (Source: P.A. 85-1440.)