Pressure on a nerve can lead to numbness, tingling or pain that’s often improved by resting the area.
Disease
Pineoblastoma
Learn about this rare cancer that begins in the brain's pineal gland. Treatments include surgery, radiation therapy and chemotherapy.
Disease
Pink eye (conjunctivitis)
This highly contagious eye condition can be itchy and uncomfortable. But much like the common cold, it rarely requires medicine or staying home.
Disease
Pinworm infection
Learn more about the symptoms, treatment and prevention of this common type of intestinal worm infection.
Disease
Pituitary tumors
Learn more about the symptoms, causes and treatment of growths that develop in the pituitary gland.
Disease
Pityriasis rosea
Learn more about the symptoms, causes and treatment of this large rash common among teens and young adults.
Disease
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.
Disease
Placenta previa
Learn about how this pregnancy complication is diagnosed and managed to reduce risks to your baby's health and your own.
Disease
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.
Disease
Plague
Learn about the symptoms, risk factors and treatment of this rare, potentially fatal disease that's usually passed on by fleas.
Disease
Plantar fasciitis
Learn about this most common cause of stabbing heel pain.
Disease
Plantar warts
Learn about the causes, treatment and prevention of these hard, sometimes painful growths that appear on the heel or ball of the foot.