Pink eye: How long is it contagious?
Many parents wonder how long pink eye (conjunctivitis) is contagious. Find out.
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First Aid
Pinworm infection
Learn more about the symptoms, treatment and prevention of this common intestinal worm infection.
繼續閱讀Pituitary tumors
Learn more about the symptoms, causes and treatment of growths that develop in the pituitary…
繼續閱讀Pityriasis rosea
Learn more about the symptoms, causes and treatment of this large rash common among teens…
繼續閱讀Placenta accreta
During pregnancy, if part of the placenta grows too far into the uterine wall, it…
繼續閱讀Placenta: How it works, what's normal
Understand how this pregnancy organ works and what conditions can affect it.
繼續閱讀Placenta previa
Learn about how this pregnancy complication is diagnosed and managed to reduce risks to your…
繼續閱讀Placental abruption
This uncommon pregnancy complication, in which the placenta separates from the wall of the uterus,…
繼續閱讀Planning to travel with atrial fibrillation?
Extra preparation before a trip can keep your plans — and heart — running smoothly…
繼續閱讀Plantar warts
Learn about the causes, treatment and prevention of these hard, sometimes painful growths that appear…
繼續閱讀Plexiform neurofibroma
Explore how plexiform neurofibromas are diagnosed and treated using advanced imaging, genetic testing, and a…
繼續閱讀Plugged ears: What is the remedy?
Plugged ears are usually a mild, temporary problem. Learn about potential causes and treatments.
繼續閱讀Pneumonitis
A general term for lung swelling and irritation, it's often caused by breathing in irritants….
繼續閱讀Pneumothorax
A collapsed lung occurs when air leaks into the space between your lung and chest…
繼續閱讀POEMS syndrome
Learn about diagnosis and treatments for this rare blood disorder that affects many parts of…
繼續閱讀Poison ivy and other summer skin irritants
Take a look at these bumps, bites and rashes. Find out what causes them and…
繼續閱讀Poison ivy rash
Learn about the symptoms, causes and home remedies for this itchy skin rash and how…
繼續閱讀Polycystic kidney disease
Learn how treatments and lifestyle changes might help reduce kidney damage from this disease.
繼續閱讀多囊性卵巢症候群（PCOS）
Polycystic ovaries, hormone imbalance and irregular periods are telltale signs and symptoms of polycystic ovary…
繼續閱讀Polycythemia vera
This slow-growing blood cancer mainly affects people over 60. Treatments and lifestyle changes may reduce…
繼續閱讀Polyhydramnios
Learn about the symptoms, causes and treatment for this condition, in which too much amniotic…
繼續閱讀Polymorphous light eruption
Learn more about the symptoms and treatments for this sun-induced skin rash that usually appears…
繼續閱讀Polymyalgia rheumatica
Older adults who get sudden muscle pain and stiffness, mainly in the shoulders, might have…
繼續閱讀Polymyositis
The muscle weakness from this condition can make it hard to climb stairs or reach…
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