An insidious but lesser-known consequence of even a mild measles infection is that it kills the very cells that remember ...

Learn about hepatitis C, how it spreads, possible symptoms, and important steps to protect yourself and others from this ...

Scientists have long thought that only one species of tick found in the United States, the lone star tick, could […] ...

In alpha-gal syndrome, the immune system overreacts to a sugar known as galactose-α-1,3-galactose, or "alpha-gal" for short.

Alexithymia makes it challenging to understand that physical symptoms can sometimes be the somatic equivalent of underlying ...

While still in nursing school, he witnessed the heartbreaking reality of patients arriving at hospitals too late for treatment.

Stress and some conditions can increase cortisol levels. High cortisol can cause symptoms such as weight gain, acne, and fatigue. Doctors may refer to high cortisol as Cushing syndrome or ...

Signs of attention deficit hyperactivity disorder (ADHD) in children can be similar to those of regular behavior in young kids. You might notice they have trouble paying attention, are hyperactive ...

Narcissism is extreme self-involvement to the point where a person ignores the needs of those around them. While anyone may have narcissistic behavior once in a while, true narcissists often ...

ADHD can appear differently in teens than in younger children. Adolescents may be less likely to show hyperactivity, although symptoms of inattentiveness and impulsivity often continue. Attention ...

If you already have a liver condition such as cirrhosis, tell your doctor if you have any new or worsening symptoms. Symptoms of liver cancer are often quite vague and vary depending on where the ...

What Causes Pneumonia and Who Is at Risk? Pneumonia symptoms can vary widely from a mild flu to a life-threatening emergency. Cough, fever, and fatigue are common, but you should seek help for more ...