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Learning Center
Type 1 diabetes
Learn about the symptoms, causes, treatment of this chronic condition in which the pancreas produces little or no insulin.
Type 1 diabetes in children
Know what symptoms to look for, as well as more about diagnosis, treatment and daily living with this lifelong insulin-dependent condition.
Types of dermatitis
Learn to identify types of dermatitis by how the skin looks. Examples include atopic dermatitis, contact dermatitis and seborrheic dermatitis.
Umbilical hernia
Learn about this condition in which your intestines create a bulge near your navel.
Uncircumcised penis: Is special care needed?
Know how to wash and care for your child's uncircumcised penis.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
Ureteral obstruction
Learn about what causes blockage of the tubes that carry urine from the kidneys to the bladder, tests you might need and how the condition can be treated.
Urinalysis
This common lab test checks urine for signs of disease and for clues about overall health.
Vaginal agenesis
In this rare condition that occurs before birth, the vagina doesn't develop and the uterus may only develop partially or not at all. Learn about treatment.
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