Nutrition basics
Learning Center
Pancreatic cysts
Most pancreatic cysts are benign, but some types are cancerous. Find out about symptoms, causes and treatment of cysts in the pancreas.
Parvovirus infection
Learn more about the symptoms, causes, treatment and prevention of this common childhood infection — sometimes called slapped-cheek disease.
Patellar tendinitis
Jumper's knee — a common knee injury — affects the tendon that stretches from the kneecap (patella) to the shinbone.
Penicillin allergy
Understand the importance of an accurate diagnosis for penicillin allergy and the best practices for antibiotic treatment options.
Pinworm infection
Learn more about the symptoms, treatment and prevention of this common type of intestinal worm infection.
Pityriasis rosea
Learn more about the symptoms, causes and treatment of this large rash common among teens and young adults.
Placenta accreta
During pregnancy, if part of the placenta grows too far into the uterine wall, it can remain attached after childbirth, causing severe maternal blood loss.
Placental abruption
This uncommon pregnancy complication, in which the placenta separates from the wall of the uterus, can endanger both the mother and the baby.
Postpartum preeclampsia
Learn about this rare condition that's typically associated with pregnancy, but that can occur after delivery, too. Untreated, it can lead to serious complications.
Premature ventricular contractions (PVCs)
Premature ventricular contractions (PVCs) are extra heartbeats that disrupt the heart rhythm. PVCs are common.
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