Carbon monoxide is an odorless, colorless, and tasteless gas that is near impossible to identify without a proper detector. It is caused by fuels not burning completely, including wood, gasoline, coal, propane, natural gas, gasoline, and heating oil.
The cause of lethargy may be suggested by its pattern and accompanying symptoms. If it starts in the morning and lasts all day, it could be due to lack of sleep or depression.
The cause is likely due to one or a combination of the following: 1  The child cannot yet hold urine for the entire night. 2  The child does not waken when his or her bladder is full. 3  The child produces a large amount of urine during the evening and night hours.  The child has poor daytime toilet habits.