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Disease

Complicated grief

In complicated grief, painful emotions of loss don't improve with time and are so severe that you have trouble recovering and resuming your own life.
Disease

Drug addiction (substance use disorder)

Drug addiction affects your brain and behavior to the point where you can't control your use of legal or illegal drugs, even when you know they cause harm.
Disease

Narcissistic personality disorder

This mental disorder includes an unreasonably high sense of importance, a need for excessive admiration, fragile self-esteem, and troubled relationships.
Disease

Intermittent explosive disorder

This mental health condition involves sudden bouts of impulsive, aggressive, violent behavior or verbal outbursts that cause major distress in life.
Disease

Retinoblastoma

Learn about the symptoms, causes and treatments for this eye cancer that occurs in young children.
Disease

Blocked tear duct

Watery, irritated eyes may happen when your tears can't drain. Learn about this common eye condition that affects newborns and, sometimes, adults.
Disease

Malignant hyperthermia

This rare genetic disorder triggers a severe reaction to certain anesthesia drugs, causing rigid muscles, high fever, fast heart rate and rapid breathing.
Disease

Asthma attack

Learn how to recognize when you need to use quick-relief treatment or get emergency care.
Disease

Kawasaki disease

Learn more about this condition that mainly affects young children and causes swelling, called inflammation, in the walls of the arteries throughout the body.
Disease

Congenital heart disease in adults

A heart condition you're born with may not cause symptoms until adulthood. Learn how adult congenital heart disease is treated and why follow-up care is important.
Disease

X-linked agammaglobulinemia

This immune system condition, found mainly in males, leads to repeat infections that are hard to treat.
Disease

Fever

Medications can lower a fever, but sometimes it's better left untreated. Fever may play a role in helping your body fight off infections.

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