Nursing butterfly (LPN) is a term known in the United States for a person who, with a doctor's or nursing license, provides nursing services to care for sick and injured people who are recovering or failing.

in Iran, a nursing license is given to a person who has completed a nursing training course (associate, bachelor, master and doctorate) in accordance with the rules of the Higher Education Planning Council in one of the approved faculties of the council for the expansion of accredited foreign universities or faculties and whose degree has been approved by the General Directorate of graduates of the Ministry of health, treatment and medical education.
people with nursing licenses are able to do specialized work in homes, nursing homes and extensive care centers.
to obtain this government license, people must successfully complete the required score during an examination period.