Alternative medicine
Learning Center
Ductal carcinoma in situ (DCIS)
Noninvasive breast cancer often has no symptoms. Find out about the causes, diagnosis and treatment of this form of breast cancer.
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.
Down syndrome
Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21.
Double uterus
Learn about symptoms, diagnosis and treatment of this uncommon condition of the uterus. It is present at birth.
Diphtheria
This rare but serious bacterial infection can cause organ damage and breathing problems. This disease is often treatable but is also preventable with a vaccine.
Diarrhea
Learn more about what causes this common digestive condition, and how you can treat and prevent it.
Diabetes insipidus
Learn more about this unusual disorder that disrupts the body's fluid balance, causing too much urination and possibly leading to dehydration.
Diabetes
Learn more about the different types of this blood sugar disorder, who's at risk and how each type can be treated.
Adding this line for testing.
Desmoplastic small round cell tumors
These rare, aggressive cancers most often form in the abdomen. Learn about DSRCT treatments, including surgery, chemotherapy and radiation therapy.
Dermatomyositis
Muscle weakness and a skin rash are hallmarks of dermatomyositis. There's no cure, but treatments can relieve symptoms.
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