Cause |
Common Features* |
Tests |
Infrequent, hard, pebblelike stools Sometimes abdominal discomfort In children who consume a constipating diet (for example, excessive milk and dairy products and few fruits and vegetables) |
A doctor's examination Sometimes an x-ray of the abdomen Stooling diary |
|
Increased urine output, which can have many causes, such as |
Vary by the disorder |
For diabetes mellitus, urine tests for glucose (sugar) and ketones and/or a blood test For diabetes insipidus or sickle cell disease, blood tests |
Developmental delay |
No daytime incontinence More common among boys and heavy sleepers Possibly family members who had wet the bed |
A doctor's examination |
Sometimes in children who snore and have pauses in breathing during sleep followed by loud snorts Excessive daytime sleepiness Enlarged tonsils |
A sleep study test |
|
Spinal defects (for example, spina bifida), leading to difficulty emptying the bladder (urinary retention) |
Obvious spinal defects, a dimple or hair tuft in the lower back, and weakness or decreased sensation in the legs and feet |
X-rays of the lower back Sometimes MRI of the spine |
Stress |
School problems, social isolation or problems, and family stress (such as divorce or separation of the parents) |
A doctor’s examination Voiding diary |
Pain while urinating, blood in the urine, the need to urinate frequently, and a sense of needing to urinate urgently Fever Abdominal pain |
Urinalysis and urine culture |
|
* Features include symptoms and the results of the doctor's examination. Features mentioned are typical but not always present. |
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MRI = magnetic resonance imaging. |