These painless, noncancerous growths can lead to a lost sense of smell or infection. Medicine or surgery can help.
Disease
Nasopharyngeal carcinoma
Nasopharyngeal carcinoma is cancer that happens in the nasopharynx, which sits behind the nose and above the back of the throat.
Disease
Nearsightedness
Tired of squinting at objects in the distance? There are effective treatment options for this eye condition, and some preventive options are emerging.
Disease
Neck pain
This common ailment can be the result of poor posture or osteoarthritis. Rarely, it can indicate a more serious issue.
Disease
Nephrogenic systemic fibrosis
Learn about symptoms, risk factors and possible treatments for this rare disorder in people with advanced kidney disease.
Disease
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.
Disease
Neuroblastoma
Learn more about the symptoms, diagnosis and treatment of neuroblastoma, one of the most common cancers of childhood.
Disease
Neurodermatitis
Learn about this itchy skin condition that can disrupt your sleep and daily activities. Treatment focuses on controlling itching and preventing scratching.
Disease
Neuroendocrine tumors
Learn about the types of tumors that make up this group of rare cancers. Find out about symptoms, causes, diagnosis and treatments.
Disease
Neurofibroma
Learn about this type of peripheral nerve tumor that forms a soft bump on or under the skin. It can appear anywhere in the body.
Disease
Neurofibromatosis type 1
This genetic condition causes tumors on nerve tissue. Surgery and other therapies can manage symptoms.
Disease
Neuromyelitis optica
Understand more about this condition that affects the spinal cord and eye nerves and is sometimes mistaken for multiple sclerosis.