Baby winter sleep arm outside cold to be important, may be cold and cold.
The baby’s body size is relatively small, the arm accounts for a relatively large proportion of the skin, if the winter weather is cold, the arm is exposed outside, it is easy to cause the baby to be cold, or even fever, cold and flu, so the arm is cold outside.
If the arm is exposed for a long time, it also causes the feeling of discomfort in the arm, pain, numbness and other symptoms.
If you usually sleep arms are easy to bare outside, you can properly wear some soft pajamas, robes, etc., to avoid bare arms, resulting in cold and cold.
If the baby appears to have uncomfortable symptoms, timely take the child to the hospital.