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Chickenpox What is chickenpox? Chickenpox is a common childhood disease. It causes an itchy, blistering rash and is easily spread to others. Until the varicella vaccine for chickenpox became available in 1995, chickenpox infection was very common. Almost everyone had been

Whooping Cough (Pertussis) in Adults What is whooping cough (pertussis)? Whooping cough (pertussis) is a very contagious respiratory illness. It mainly affects babies and young children, but adults can also get it. Whooping cough caused thousands of deaths in the 1930s and 1940s

Diphtheria What is diphtheria? Diphtheria is an illness caused by bacteria. There are two types: Respiratory diphtheria. This type affects the throat, nose, and tonsils. Skin (cutaneous) diphtheria. This type affects the skin. It was a common childhood disease in the past. A

Infectious Mononucleosis What is infectious mononucleosis (mono)? Infectious mononucleosis is a type of infection. It causes swollen lymph glands, fever, sore throat, and often extreme fatigue. It’s often spread through contact with infected saliva from the mouth. Symptoms can

Polio (Poliomyelitis) What is polio? Poliomyelitis is commonly called polio. It's an infectious disease. It is caused by 1 of 3 types of poliovirus. Polio is easily spread from person to person. The poliovirus is a virus that can cause paralysis. But most people who are infected

Rubella (German Measles) What is rubella? Rubella is sometimes called German measles. It's a viral infection. It usually causes a mild illness in children. Adults have a slightly more severe illness. But the virus can cause serious birth defects in pregnant people. A vaccine is

Toxic Shock Syndrome (TSS) What is toxic shock syndrome? Toxic shock syndrome (TSS) is an illness that produces symptoms in many systems of the body. Certain bacterial infections release toxins into the bloodstream. These toxins can spread to many body organs. This can cause

Chronic Liver Disease/Cirrhosis What is cirrhosis? Cirrhosis is when scar tissue replaces healthy liver tissue. This stops the liver from working normally. Cirrhosis is a long-term (chronic) liver disease. The damage to your liver builds up over time. The liver is your body’s

Overview of the Male Anatomy This is an overview of the male reproductive anatomy: Scrotum. The bag of skin that holds and helps to protect the testicles. The testicles make sperm. To do this, the temperature of the testicles needs to be cooler than the inside of the body. This

Substance Abuse or Chemical Dependence What is substance abuse or dependence? Substance abuse (alcohol or other drugs) Substance abuse is a recognized health disorder. It refers to the abuse of illegal or legal substances. Alcohol is the most common legal drug of abuse. Substance