A 29-year-old female asked:
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my son is 35 months old. the last 2 nights he has started wetting the bed, after previously staying dry for the last 8 months. what could cause this?

2 doctor answers
Dr. Cory Annis
28 years experience Internal Medicine and Pediatrics
Household changes: When kids suddenly act younger than they are, it frequently means they are stressed somehow. Bringing a new person into the house is a good example. Their behavior returns to age-level quickly as they adjust to the change. Also meds like Benadryl (diphenhydramine) cause kids to sleep deeply enough to lose control. Check with doctor, however, as urinary tract infections and physical/sexual abuse can also be a cause.
Answered on Jan 26, 2017
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3 thanks
Dr. Susumu Inoue
53 years experience Pediatric Hematology and Oncology
A few possibilities: Something you can fix right away as the cause would be urinary tract infection. You need to have his urine tested at your doctor's office. Other possibilities are: 1. Is there any circumstance that caused stress in your son? Such as violent argument between parents? 2. For some reason did he drink excessive amount of fluid last 2 evenings? 3. Some systemic illness, such as stomach flu?
Answered on May 18, 2013

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Need exam: There could be many causes. I would have him seen today.
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