Medically reviewed by Ronald Lubelchek, MD Typhus fevers are a group of diseases caused by rickettsia bacteria infection. Typhus is transferred to humans by an infected animal. Typical carriers ...

Fluorescent image of a human body louse with Yersinia pestis infection (orange/red) in the Pawlowsky glands. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...

Some causes of itching affect just one area, while others can make you feel like your whole body is itching. In some cases, itching may also be worse at night. It’s best to contact a doctor if ...