
Child Having Cough And Runny Nose. Diagnosed With Asthma. What Should Be Done?

A cough that has lasted this long would be classified as a chronic cough.
The most common causes are: post nasal drip, uncontrolled asthma (there is a cough variant asthma that presents mainly with cough and no wheeze), gastroesophageal reflux (this actually occurs commonly in children and they do not present with the typical symptoms but with cough which may be worse at night or laying flat, it can also worsen asthma if it is present).
Your doctor may want to do an xray to make sure that there are no obvious reasons for the cough.Hyperinflated lungs (more air than usual) may be demonstrated which would indicate asthma, a foreign body may also be seen.A sinus radiograph may also be done to check the sinuses.
Allergen testing may check if there are any specific allergens that may be contributing to his cough.
Because post nasal dripping is the most common reason for chronic cough, it is treated first with antihistamines, decongestants, avoiding any enviromental allergens.This cough tends to worse when the child is taking a nap or at night and begins soon aften laying down.If a trial period passes and he is still having symptoms then you would move on to the next step.
Asthma ,as you know, typically presents with a dry cough that is worse at night. If with treatment for postnasal drip , symptoms are still present and fitting the profile of an asthmatic (his chances are high since both of you have a history of asthma) then your doctor may prescribe an preventative inhalor for him. These inhalors are steroid inhalors however there is minimal absorption into the system and the benefits of their use outway any side effects. The most common side effect would be oral thrush. (In light of the family history of asthma, you may want to do this stage first and start him with an inhalor steroid).
If treatment for the above 2 fail then, you would move on to treatment for gastroesopahageal reflux which is also responsible for constant coughing.
Another possibility is repeated infections, because at his age , he can have up to 10 colds a year, it is possible to have repeated infections that give the impression of a chronic cough.
I know it can be difficult hearing your child cough constantly, my 3 yr old had a constant cough for about 2 mths and it turned out to be reflux.
Your doctor will take a through history and examine your son to determine which is the most likely contributor to his symptoms.
I hope this helps , feel free to ask any other questions

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