Medically reviewed by Robert Burakoff, MD Mucus in stool is normal, but it's not usually visible to the naked eye. When it is, you may notice stringy clear, white, or yellow goop in the toilet or ...

A cough that produces mucus or phlegm can reveal an underlying infection or condition. Learn about wet cough causes and how ...

they help keep our mucous membranes moist and protect them from getting dry and cracked. Michael Smith, MD It's just when you have a cold or some kind of upper respiratory infection, you produce ...

The virus is spread by bodily fluids, such as blood, and enters the body though penetrated skin or mucous membranes such as ... Symptoms of acute infections include fever, loss of appetite ...