Dry air makes the cough worse, so keep the child's room humidified.
Try using a vaporizer near the child's bed.
Turn the shower on and let the bathroom fill with warm mist. Sit
with the child on your lap for up to 15 minutes in the misty room. Do
NOT get into the shower with your child. Just sit on the counter,
floor or toilet seat and let the child breathe in the warm steam. This
usually works to help relax the vocal cords and improve the stridor.
Another simple way to provide warm mist is to let your child breath
through a warm, moist facecloth placed loosely on the mouth and
nose. Be careful not to overheat the facecloth to avoid burns.
Another technique that can be helpful is to take your child out into
the night air. The moist night air may help to alleviate the coughing.
However, if it is extremely cold outside, avoid taking your child out,
especially if he has a fever.
Warm fluids help with coughing spasms. These spasms are usually
caused by sticky mucous. Give your child plenty of clear fluids like
apple juice, Gatorade, lemonade, or tea.
Cough medicines are not usually helpful. Fluids are more important.
Older kids might be able suck on a cough drop. For younger children,
corn syrup might help.