Bronchitis is an infection that causes irritation and inflammation in the lungs' major airways (bronchi). Bronchitis is divided into two types: acute and chronic. Chronic bronchitis is a long-term condition that can reoccur. Long-term stress, such...

Bronchitis is an infection that affects the lungs' major airways (bronchi), causing irritation and inflammation. Bronchitis can be classified into two types: acute and long-term. Chronic bronchitis is a long-term problem that can come back. It is usu...

Cytomegalovirus (CMV) is a common virus that belongs to the herpesvirus family. It can infect people of all ages and is usually harmless to those with a healthy immune system. However, it can cause serious complications in individuals with weakene...

Diphtheria is a serious bacterial infection that usually affects the mucous membranes of the throat and nose. It is caused by the bacterium Corynebacterium diphtheriae and is spread through respiratory droplets or direct contact with an infected p...

Dry mouth, also known as xerostomia, is a condition in which the salivary glands do not produce enough saliva to keep the mouth moist. This can lead to a variety of symptoms, including a dry, sticky feeling in the mouth, difficulty swallowing or s...

Erythema nodosum is a type of skin inflammation that is located in a certain portion of the fatty layer of skin. Erythema nodosum (also called EN) results in reddish, painful, tender lumps most commonly located in the front of the legs below the k...

Influenza, a viral infection, causes an illness that can range from mild to life-threatening. Influenza, more commonly known as the flu, is a viral infection of the respiratory tract that affects the nose, throat, and sometimes lungs. ...

Hand, Foot, and Mouth Disease (HFMD) is a common viral illness that usually affects infants and children under the age of 5, although it can also occur in older children and adults. It is caused by several different viruses, most commonly the coxs...

What is cancer? Cancer is a group of many related diseases that begin in cells, the body's basic unit of life. All of the bodies tissues and organs are composed of cells of various types. Normally, cells grow and divide to form new cells i...

Herpetic gingivostomatitis is a viral infection caused by the herpes simplex virus. It is characterized by painful sores and ulcers in the mouth and on the gums, as well as fever, swollen lymph nodes, and general malaise. It is a common infection ...

Cowpox is a viral disease that normally affects the udders and teats of cows. On rare occasions, it may be transmitted to humans and produce a characteristic red skin rash and abnormally enlarged lymph nodes (lymphadenopathy). Cowpox is caused by ...

Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness and can sometimes lead to hospitalization or even death. Symptoms of the flu include fever, cough, sore thro...

What is cancer? Cancer begins in cells, the building blocks that make up tissues. Tissues make up the larynx and the other organs of the body. Normal cells grow and divide to form new cells as the body needs them. When normal cells...

Megalocornea-mental retardation (MMR) syndrome, otherwise known as Neuhauser syndrome, is an extremely rare genetic disorder characterized by distinctive abnormalities of the eye, several degrees of cognitive impairment, and a wide variety of addi...

Mononucleosis, commonly known as mono, is a viral infection caused by the Epstein-Barr virus (EBV). It is most commonly seen in teenagers and young adults, but can affect people of any age. Mono is typically spread through saliva, which is why it ...

Oral cancer is a type of cancer that develops in the tissues of the mouth or throat. It can occur in the lips, tongue, gums, floor of the mouth, roof of the mouth, or the inner lining of the cheeks and throat. Oral cancer is often linked to tobacc...

Oral papilloma is a benign growth or tumor that develops on the mucous membranes in the mouth. It is caused by the human papillomavirus (HPV) and typically appears as a small, painless bump or cluster of bumps. Oral papillomas are usually harmless...

Oral thrush, also known as oral candidiasis, is a fungal infection caused by the overgrowth of Candida albicans in the mouth. It typically appears as white, creamy patches on the tongue, inner cheeks, roof of the mouth, gums, or tonsils. Oral thru...

Palatal petechiae are small red or purple spots that appear on the roof of the mouth (palate). They are caused by tiny broken blood vessels and are often a sign of trauma or injury to the mouth, such as forceful vomiting, coughing, or oral sex. Pa...

Polio, short for poliomyelitis, is a highly contagious viral infection that can lead to paralysis, muscle weakness, and in severe cases, death. It primarily affects children under the age of 5. The virus is spread through contaminated food and wat...

Respiratory syncytial virus (RSV) infection is a common respiratory virus that causes cold-like symptoms. It commonly affects infants by the time they reach the age of two.  Respiratory syncytial virus (RSV) infection symptoms ...

Rubella, also known as German measles, is a contagious viral infection that causes a mild fever and a red rash on the skin. It is typically a mild illness, but can be more serious for pregnant women, as it can cause birth defects in the developing...

Mucopolysaccharidoses, which are also known as mucopolysaccharide storage (MPS) diseases, are a group of rare genetic disorders caused by the deficiency of one of ten specific lysosomal enzymes. The lysosomes are particles bound in membranes withi...

Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. It can be transmitted through sexual contact, including vaginal, anal, and oral sex. Syphilis can also be passed from mother to baby during pregnancy or...

Tonsillitis is an inflammation of the tonsils, which are two small glands located at the back of the throat. It is usually caused by a viral or bacterial infection and can result in symptoms such as sore throat, difficulty swallowing, fever, and s...

Toxoplasmosis is a disease caused by the Toxoplasma gondii parasite. It is commonly found in cat feces and can also be present in contaminated soil, water, and raw or undercooked meat. In healthy individuals, toxoplasmosis may cause mild flu-like ...

Toxoplasmosis (tok-so-plaz-MOE-sis) is a disease that results from infection with the Toxoplasma gondii parasite, one of the world's most common parasites. Infection usually occurs by eating undercooked contaminated meat, exposure from infected ca...

The respiratory system consists of a network of organs like the nose, mouth, voice box, windpipe, airways, lungs, blood vessels, and specific muscles. All work together in a coordinated manner and help in respiration. Upper Respirat...

General DiscussionVACTERL association is a nonrandom association of birth defects that affects multiple median and para-median structures. The term VACTERL is an acronym with each letter representing the first letter of one of the more co...

General DiscussionVACTERL association is a nonrandom association of birth defects that affects multiple median and para-median structures. The term VACTERL is an acronym with each letter representing the first letter of one of the more co...