Teen health
Learning Center
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Postpartum complications: What you need to know
Learn about self-care after childbirth and the symptoms of a possible problem.
Polyhydramnios
Learn about the symptoms, causes and treatment for this condition, in which too much amniotic fluid builds up during pregnancy.
Pneumonia
Pneumonia — Learn about the symptoms, causes and treatment of this serious lung infection.
Plugged ears: What is the remedy?
Plugged ears are usually a mild, temporary problem. Learn about potential causes and treatments.
Phenylketonuria (PKU)
PKU is caused by a change in the gene that helps create an enzyme needed to break down phenylalanine. Treatment includes a special diet and medication.
Phantosmia: What causes olfactory hallucinations?
Phantosmia is often due to a head injury or upper respiratory infection.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
Peripheral nerve tumors
Learn about these growths that form in or near nerves connecting to the spinal cord. Surgery is the most common treatment.
Pectus excavatum
Pectus excavatum causes the breastbone to sink into the chest. This can affect heart and lung function. Surgery helps correct the deformity.
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