Hello,
Thanks for the query to H.C.M. Forum.
As all symptoms are an indication that child has develops asthmatic allergic
bronchitis.
Please don't be in panic as every thing will be in control .
Sever
cough ( bout of cough , naturally a cause of concern for parents ) is due to broncho constriction ( congestion).
As anti allergic drugs are not providing relief , try bronchodilators after consultation with your treating doctor .
Alternatively you can consult another physician and get his opinion.
Avoidance of molds, hay ,fumes, sprays, pollen, mite , dust , sudden fall & rise of temperature helps.
Strong coffee & steam inhalation will provide relief.
Good luck.
Dr. HET