Bed-wetting in children is the unintentional (involuntary) discharge of urine during the night.

Causes
A small bladder - The child's bladder may not be developed enough to hold urine produced during the night and a full bladder may not wake the child. This happens when the nerves that control the bladder are slow to mature.
Hormonal imbalance - During childhood, some kids don't produce enough anti-diuretic hormone (ADH) to slow nighttime urine production.
Stressful events - Events like having a new younger sibling, starting a new school, or sleeping away from home may trigger bed-wetting.
Urinary tract infection - A UTI can sometimes cause bed wetting, which persists only until the infection prevails.
Sleep apnea - Sometimes bed-wetting is a sign of obstructive sleep apnea, a condition in which the child's breathing is interrupted during sleep — often due to inflamed or enlarged tonsils or adenoids.
Diabetes - For a child who's usually dry at night, bed-wetting may be the first sign of diabetes.
Chronic constipation - The same muscles are used to control urine and stool elimination. When constipation is long term, these muscles can become dysfunctional and contribute to bed-wetting at night.
Symptoms
- Wetting during the day
- Frequency, urgency, or burning on urination
- Straining, dribbling, or other unusual symptoms with urination
- Cloudy or pinkish urine or blood stains on underpants
- Inability to control bowel movements
- Constipation
- Other signs and symptoms may include snoring, frequent ear and sinus infections, sore throat, or daytime drowsiness.
Home Remedies
Olive oil
- Heat some olive oil and rub it on the lower abdomen of the child.
- The heating effect of the olive oil will help develop better bladder control
Fennel seeds
- To a glass of warm milk, add 1 tsp of fennel seed powder
- Add 1 spoon of sugar to it (Can add 2 if needed)
- Give this to the child before he/she goes to bed
Cinnamon
- Cinnamon can be rightly called as the wonder bark due to various health benefits.
- Make the child chew half an inch of cinnamon bark every day.
- If not, cinnamon powder mixed with sugar can be sprinkled on his favorite sandwich/toast/muffin
Gooseberries
- Extract the pulp of gooseberries and sprinkle some pepper powder on it.
- Make the child consume this before going to bed
- Simply mix some gooseberry powder in a glass of milk and give to your child before going to bed