Mayo Clinic diet
Learning Center
Nocturnal panic attacks: What causes them?
Nighttime panic attacks can cause sweating, rapid heart rate, trembling, shortness of breath, heavy breathing, flushing or chills. Learn about treatment.
Nighttime headaches: How can I get relief?
"Alarm clock" (hypnic) headaches wake people up. But other nighttime headaches also can disrupt sleep. Relief begins with determining the cause.
Nicotine dependence
Nicotine dependence can be tough to kick, but treatments and resources are available to boost your chances of success.
Narrow stools: Should I be concerned?
Narrow stools may be a sign of narrowing or obstruction of the colon.
Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD)
Learn about the symptoms, diagnosis and treatments for this autoimmune disease that attacks nerve fibers in the body.
Mood and food: Break the link
Do you eat when you're not hungry? You might be eating as a response to stress or boredom. Pay attention to when you eat and how you're feeling. Is your hunger physical or emotional? If you ate just a few hours ago and don't have a rumbling stomach, you're probably not hungry. Give the craving time to pass. Distract yourself and substitute a healthier behavior. Take a walk, listen to music or call a friend.
Mononucleosis and Epstein-Barr: What's the connection?
The Epstein-Barr virus sometimes causes a disease known as mono. Learn who is at risk and what the symptoms are.
Monoclonal gammopathy of undetermined significance (MGUS)
When bone marrow produces an unusual protein in the blood, it can sometimes lead to certain types of blood cancer.
Mold allergy
Coughing, sneezing and itchy eyes often accompany this common allergy. Find out how to treat this condition and help keep it under control.
Molar pregnancy
This rare pregnancy complication requires early treatment. Learn more about diagnosis and treatment of this type of pregnancy loss.
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