Stress basics
Learning Center
Down syndrome
Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21.
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.
Diaper rash
Learn more about the causes, prevention and home remedies for this common condition that irritates skin under diapers.
Diabetic retinopathy
Good diabetes control and regular exams can help prevent this diabetes complication that affects the eyes. Find out how.
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.
DiGeorge syndrome (22q11.2 deletion syndrome)
This condition is due to missing part of chromosome 22. It may cause heart issues, thyroid problems, cleft palate, lower immunity and other health problems.
Dermatitis
Learn about the symptoms, causes and treatments of this itchy skin condition that affects children and adults, and about how moisturizers help prevent it.
Dehydration
Dehydration is especially common and dangerous for infants, young children and older adults. Learn more about treating and preventing dehydration.
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