Allergy/Immunology is a specialty of medicine which deals with diagnosis and treatment of asthma, allergies. An allergy is an abnormal reaction to a substance or environmental trigger. Doctors specializing in this field are called Allergists. Allergists determine what substances or triggers cause reactions in each individual and look for ways to treat those allergies, so the sufferer can go on to live a normal life. Allergists may perform allergy tests like skin challenge, scratch test, breathing test to make accurate diagnosis and provide the right treatment plan.

Otolaryngologists are more commonly called ENTs, which stands for ear, nose, and throat. ENTs are medical professionals that are trained to diagnose and treat diseases and illnesses that affect the ear, nose, throat, and related structures of the head and neck. They can treat serious diseases, such as cancer, or simple health problems, such as strep throat.

An internist or Internal Medicine doctor is someone who specializes in diagnosing and treating illnesses, diseases, and health problems. Most internists are also primary care doctors and treat patients on a regular basis. They can diagnose and treat common illnesses or more serious problems. Most people see an internist regularly. Those with chronic illnesses may do so on a monthly or even weekly basis. Internists are the most common types of doctors.

An ophthalmologist is a healthcare professional who has been trained to treat eye diseases and other conditions that affect the eyes. They diagnose and treat these issues and can even conduct surgery to help repair certain condition. They also conduct eye exams and help patients find the right glasses or other ways to improve their vision.