Chickenpox (infection) – Symptoms, Causes and Treatment

Chickenpox Definition Chickenpox – a common childhood illness that results from infection with the varicella-zoster virus, a member of the herpesvirus family. Chickenpox, also called varicella disease, is highly contagious, spreading through direct contact and exposure to airborne droplets containing the varicella-zoster virus. The incubation period (time from exposure to illness) is 10 to 21 days. Symptoms and Diagnostic Path The […]

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Wart – Definition, Causes, Symptoms and Removal

Definition of Warts and Causes Wart is a growth, typically rough and raised, that appears on the skin. The human papillomavirus (HPV), which has numerous strains, causes common warts as well as variations including genital warts (a common sexually transmitted disease) and plantar warts which appear on the soles (plantar surfaces) of the feet. Because common warts are […]

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Hepatitis – Types A, B, C, D – Symptoms and Treatment

Hepatitis Definition Hepatitis – inflammation of the liver. There are numerous kinds and causes. Most hepatitis results from specific viruses that cause infections of the liver, alcohol abuse, and hepatotoxic drugs. Hepatitis is the leading cause of liver failure, and reason for liver transplantation, in the United States. Types of hepatitis Infectious (viral) Hepatitis The viruses that cause viral […]

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Colds Symptoms and Treatment

Colds Definition Colds – common illnesses resulting from infection with one of more than 200 variations of rhinovirus, a family of highly contagious viruses that infiltrate the nasal mucosa (mucous membranes that line the inside of the nose and the sinuses). Because so many variations of rhinovirus can cause colds, most people get several colds a […]

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Encephalitis (Virus) – Symptoms and Treatment

Encephalitis Definition Inflammation and infection of the brain. Encephalitis usually results from infection with a virus and is potentially life threatening. Infection can enter the brain via pathogens that are small enough to pass across the blood-brain barrier or that are able to follow neural pathways (the routes of nerves) into the brain. The most […]

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Genital Herpes – Symptoms, Treatment, Causes and Spreading

Definition of Genital Herpes and Definition Genital herpes – a sexually transmitted disease (STD) resulting from infection with herpesvirus, usually herpes simplex VIRUS 2 (HSV-2). Herpes simplex virus 1 (HSV-1), which causes cold sores, may also cause sores in the genital area. Genital herpes is one of the most prevalent STDs in the United States, infecting about 25 percent […]

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Hantavirus Pulmonary Syndrome – Symptoms and Treatment

Hantavirus Pulmonary Syndrome Definition and Risk for Infection An illness resulting from infection with hantavirus. Certain species of deer mice carry the hantavirus, which they shed in their droppings, urine, and saliva. People who come into contact with these excretions, which may be through direct touch or inhalation, may then acquire infection with the virus. Deer mice live primarily […]

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Hemorrhagic Fevers – Symptoms, Treatment and Fever Viruses

Hemorrhagic Fevers Definition Life-threatening illness resulting from infection with various viruses, spread by the bites of mosquitoes and ticks, the hallmark of which is the collapse of multiple organ systems because damage to the blood vessels impairs their ability to contain and transport blood. The dozen or so viruses that cause hemorrhagic fevers belong to […]

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HIV / AIDS – Definition

HIV / AIDS Definition An infection with the human immunodeficiency virus (HIV) that ultimately results in the illness acquired immunodeficiency syndrome (AIDS). Though new hiv/aids infections are on the decline in the United States and other industrialized nations, hiv/aids remains endemic on the African continent. Hiv/aids spreads through contact with body fluids such as occurs with sexual contact (vaginal intercourse, anal intercourse, […]

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Human Papillomavirus (HPV) – Virus, Infection, Symptoms and Cervical Cancer

Human Papillomavirus Definition Human Papillomavirus – a family of more than 100 strains of virus, various strains of which cause common warts, genital hpv infection, and cervical cancer. HPV and Common Warts The strains of HPV that cause common warts are mildly contagious and are more likely to spread to different locations on a person’s body rather […]

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