Fitness basics
Learning Center
Pineoblastoma
Learn about this rare cancer that begins in the brain's pineal gland. Treatments include surgery, radiation therapy and chemotherapy.
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.
Pet allergy
Family pet making you sneeze? Find out about diagnosis, treatment and handy household tips for relieving bothersome pet allergy symptoms.
Perimenopause
Discover effective treatments and learn self-care strategies for hot flashes, night sweats, vaginal dryness and other perimenopause symptoms.
Pelvic inflammatory disease (PID)
This serious infection of the female reproductive organs can cause long-term complications such as infertility and chronic pain. Know the symptoms and causes.
Pediatric obstructive sleep apnea
Understand this condition that can cause your child's breathing to become repeatedly blocked during sleep — either partially or completely.
Pediatric brain tumors
Pediatric brain tumors include medulloblastoma, glioma, embryonal tumor, germ cell brain tumor, spinal cord tumor, craniopharyngioma and pineoblastoma.
Pectus excavatum
Pectus excavatum causes the breastbone to sink into the chest. This can affect heart and lung function. Surgery helps correct the deformity.
Patent foramen ovale
Learn more about the causes and complications of this condition in which a hole in the heart doesn't close the way it should after birth.
Patent ductus arteriosus (PDA)
Learn about symptoms, causes and treatment of this common — and treatable — heart problem that occurs shortly after birth.
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