A pediatrician is a doctor who specializes in the regular care of children, as well as the diagnosis and treatment of illness in children. Young patients are often more complicated to treat because they are still growing and developing.
While pediatricians may sub-specialize in specific therapy areas like oncology, surgery, ophthalmology, and anesthesiology, in general, pediatricians provide services like vaccinations, health exams, and treatment of common ailments and injuries. In addition, pediatricians are trained to handle the complex emotional and behavioral issues faced by children, especially during puberty.
Pediatricians normally see their patients from birth until the age of 18, although some may agree to treat patients into their early 20s, if requested.

An allergy & immunology specialist is a physician who is specially trained in matters pertaining to chronic and acute allergies, as well as deficiencies of the immune system. The doctor will determine whether an allergy, which attacks our immune system, is present. They'll also determine the cause, whether it be environmental triggers like trees and pollen, food-borne like peanuts and dairy, the venom of insects like bees, or a medication like penicillin.
In addition to determining the allergen causing an immunological response in a patient, the specialist will treat the symptoms caused by the reaction.

Legal medicine specialists advise on a variety of laws and regulations regarding health care and public health. This include disability claims, hospital law, privacy laws and physicians’ obligations and liabilities. They typically have a medical degree and a law degree so they're able to address specific legal issues that apply to medical professionals, hospitals and clinics.
Compared to forensic medicine, which deals with determining cause of death in criminal investigations, they deal with issues that impact patient care and they’re also typically involved in assessing illegal substance use in athletes.