Articles In This Section
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Definition: DNA
DNA is the genetic information inside the cells of the body that helps make people who they are.
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A to Z: Diabetes, Type 1
Diabetes is a disease that affects how the body uses glucose. In type 1 diabetes, the pancreas doesn't make enough insulin, a chemical in the body that helps glucose enter the cells.
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A to Z: Diabetic Ketoacidosis
Diabetic ketoacidosis (DKA) can be a life-threatening complication of uncontrolled diabetes.
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A to Z: Diplegia
Learn about conditions that affect the brain, central nervous system, and muscle coordination.
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A to Z: Down Syndrome
Learn about Down syndrome (DS), a condition in which extra genetic material causes delays in the way a child develops, both mentally and physically.
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A to Z: Drug Withdrawal, Newborn
Newborn babies who were exposed to drugs or alcohol while in the womb can develop this syndrome after birth. Learn about it here.
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A to Z: Duodenitis
Learn more about diseases and conditions of the stomach and digestive system.
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A to Z: Dysmenorrhea
"Dysmenorrhea" means difficult or painful periods.
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A to Z: Dysphagia
Swallowing difficulties can affect many aspects of a child's health, including feeding, breathing, and overall growth.
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A to Z: Dysrhythmia
Learn more about dysrhythmia: an abnormality in the heart's beat or rhythm caused by electrical impulses functioning improperly.
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A to Z: Dysuria
Learn more about dysuria (or painful urination) and its treatment.
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A to Z: Dermatitis, Infantile Seborrheic
Learn about dermatitis, inflammation of the skin that causes itching and discomfort.
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A to Z: Diabetes Insipidus, Nephrogenic
In nephrogenic diabetes insipidus, the body loses too much water because of a problem with the kidneys.
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A to Z: Diabetes Insipidus, Central
In central diabetes insipidus, the kidneys make large amounts of urine, causing the body to lose too much water.
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A to Z: Diabetes
Diabetes is a disease that affects the way the body handles glucose, a sugar released by the foods we eat.
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A to Z: Developmental Delay
As kids grow they develop socially and emotionally, and they learn speech, language, motor skills, and cognitive thinking. But in some kids that development can be delayed. Learn more here.
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A to Z: Dermatophytosis (Ringworm)
Dermatophytosis, or ringworm, is a highly contagious infection of the skin, hair, or nails caused by a type of fungus called a dermatophyte.
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A to Z: Dermatomyositis
Learn about dermatomyositis, an inflammatory muscle disease that weakens muscles and produces a distinctive skin rash.
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A to Z: Dermatitis, Seborrheic
Learn about seborrheic dermatitis, inflammation of the skin that causes itching and discomfort.
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A to Z: Dermatitis, Contact
Learn about contact dermatitis, inflammation of the skin that causes itching and discomfort.
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A to Z Symptom: Diarrhea
Diarrhea (loose, watery, or more frequent stools) can be a symptom of many conditions, including common infections. Most cases go away in a few days with proper home care.
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A to Z Symptom: Dizziness
Dizziness refers to feelings of lightheadedness, imbalance, or vertigo (the sensation that one’s surroundings are spinning or moving).
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A to Z: Deformity, Acquired
Learn about complications of injuries and illnesses and conditions that affect the size and shape of body parts.
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A to Z: Deformity, Congenital
Learn about types of birth defects and conditions that affect the size and shape of body parts.
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A to Z: Dehydration
Learn about dehydration, a condition that occurs when someone loses more fluids than he or she takes in.
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A to Z: Dental Cavities
A dental cavity is a hole in the tooth that can grow bigger and deeper over time.
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A to Z: Dermatitis
Learn about dermatitis, inflammation of the skin that causes itching and discomfort.
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A to Z: Dermatitis, Atopic
Learn about atopic dermatitis, an inflammation of the skin that causes itching and discomfort.
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A to Z: Disuse Osteoporosis
See: Osteoporosis, Disuse.
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A to Z: Dislocation, Toe
A dislocation is when the bones in a joint slip out of their normal position. A dislocated toe may happen from a blow or jamming the toe, such as bumping the toe into furniture or during sports.
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A to Z: Dislocation, Thumb
A dislocation is when the bones in a joint slip out of their normal position. A dislocated thumb may happen from a fall, blow, or sports injury, especially if the thumb is bent back or jammed.
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A to Z: Dislocation, Shoulder
A shoulder dislocation causes the top of the upper arm bone (humerus) to slip out of its normal position in the shoulder socket.
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A to Z: Dislocation, Hip
A dislocation is when the bones in a joint slip out of their normal position. A hip dislocation is an injury that occurs when the ball of the thighbone moves out of the socket of the hipbone.
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A to Z: Dislocation, Finger
A dislocation is when the bones in a joint slip out of their normal position. A finger dislocation may happen from a fall, blow, or sports injury, especially if the finger is bent back or jammed.
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A to Z: Dislocation, Elbow
A dislocation is when the bones in a joint slip out of their normal position. A dislocated elbow happesn when the upper and lower parts of the arm to slip out of position.
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A to Z: Diastrophic Dysplasia
Diastrophic dysplasia is a rare genetic disorder that interferes with bone development and causes abnormal bone growth and dwarfism (short stature).
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A to Z: Developmental Dysplasia of the Hip (DDH)
In this condition, dislocation of the hip joint around the time of birth can affect a child's growth, development, and movement.
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A to Z: Dyspnea
Learn more about difficult or labored breathing.