Fitness basics
Learning Center
Noonan syndrome
This genetic condition stops typical development in parts of the body. It may include unusual facial features, short height, heart problems or other issues.
Nightmare disorder
Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Niemann-Pick disease
A condition passed down in families that affects how the body breaks down and uses fats. Fat buildup in cells damages the nerves, brain and other organs.
Neuromyelitis optica
Understand more about this condition that affects the spinal cord and eye nerves and is sometimes mistaken for multiple sclerosis.
Neurofibromatosis type 1
This genetic condition causes tumors on nerve tissue. Surgery and other therapies can manage symptoms.
Neuroblastoma
Learn more about the symptoms, diagnosis and treatment of neuroblastoma, one of the most common cancers of childhood.
Nephrotic syndrome
Swelling around your feet and ankles is a common sign of this condition that occurs when your kidneys pass too much protein in your urine.
Myocarditis
Learn about the diagnosis and treatment of this inflammation of the heart muscle that can reduce the heart's ability to pump blood.
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.
Muscular dystrophy
Read about different types of this progressive disease that interferes with the creation of new muscle, as well as treatments to help with symptoms.
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