my daughter who is almost 3 has been suffering from a cough that has lasted for a few weeks now. she had 3 different colds prior to this happening including a wheezing episode which was looked at by our doctor. shes alot like me in that i suffered from asthma as a child but do not remember it. she has been vaccinated for whooping cough. this cough most affects her when she lays down to sleep and wakes her periodically through the night. she also gags from time to time and coughs up something but chewing gum seems to help subside the cough. her visits to the doctors for these colds did not show anything wrong with her lungs or breathing so i,m a little stumped not to mention worried. the 3 colds she had prior to her coughing could explain much but i'm not sure any advice would help.
Viral infections, such as a cold, can cause a cough that may linger for weeks to months. Pertussis, which is more commonly known as whooping cough, can also cause a cough like this. It is also possible that this is a sign of asthma. This is a real possibility if the cough did not start along with a cold.