This childhood mental health condition includes frequent and persistent anger, irritability, arguing, defiance or vindictiveness toward authority.
Disease
Osteochondritis dissecans
Osteochondritis dissecans most commonly affects children who are very active in sports. Learn about the symptoms and treatment of this joint condition.
Disease
Paget's disease of bone
Find out about this condition that can make bones fragile and misshapen, along with the osteoporosis drugs that can treat it.
Disease
Paget's disease of the breast
This rare form of breast cancer causes breast skin changes. Learn about the symptoms, causes, diagnosis and treatments, including surgery.
Disease
Painful intercourse (dyspareunia)
Pain during sex can happen for many reasons, ranging from physical conditions to emotional concerns. Medicines or other therapies may help.
Disease
Panic attacks and panic disorder
Learn about effective treatment for sudden episodes of intense fear that trigger severe physical reactions when there is no real danger or apparent cause.
Disease
Parkinson's disease
There's no cure for this progressive movement disorder, but treatments can help your symptoms get better.
Disease
Patent ductus arteriosus (PDA)
This lasting opening between the heart's two major blood vessels is a type of congenital heart defect. Know the symptoms, causes and treatment.
Disease
Pediatric white blood cell disorders
Many factors can cause too few or too many white blood cells. Find out more about these conditions in children.
Disease
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.
Disease
Peripheral artery disease (PAD)
This common blood flow condition can cause leg pain when walking. Lifestyle changes and medicines can help, but sometimes surgery is needed.
Disease
Persistent depressive disorder
This type of depression may cause you to feel sad and empty and to lose interest in life. You may feel like a failure. These feelings may last years.