Thanks for your question on Health Care Magic.
I can understand your son's situation and problem.
In children, viral infection is the most common cause for
bronchitis.
And viral infection also causes skin rashes.
So possibility of viral bronchitis and skin rashes is high in your son's case.
Usually, viral infection is self limiting and improves in 1 week by its own.
But your son is having rashes since 10 days. So many need
antiviral drugs for the rashes.
Antihistamine drug is also beneficial in such cases.
Once this episode is over, get done
vaccination with
Influenza virus to prevent such infections.
Hope I have solved your query.
Wishing good health to your son. Thanks.