Doctors explain everything you need to know about Lyme disease and what to do if you find a tick attached to your skin.

A man with a complex medical history ended up with a rare bacterial infection after taking probiotics in the hospital.

Most cases of nocardiosis start out as lung infections, in which pus-filled cavities, or abscesses containing the bacteria, form in the lungs. This can cause symptoms such as chest pain, a cough ...

Allergies and sinus infections can cause many similar symptoms, such as nasal congestion. However, the conditions have ...

Here's what tuberculosis is, how it's transmitted and how you can expect to have it treated if it affects you or someone you love.

New research suggests that bacterial vaginosis can be sexually transmitted, meaning men can reinfect their female partners.

Bacterial meningitis is fatal in 10% to 15% of cases, even with antibiotics and appropriate care. Early symptoms of bacterial meningitis may resemble those of a cold and fever. As the meninges ...