Gerri
My children do not show signs of asthma, yet. I am a moderate/severe asthmatic (diagnosed at age 2 after many false diagonses of pnemonia and being sent home, and then test that I hope my children will never have to endure), and have fear of them developing my problems. I do not know the effects of singular on children, but I find it helps my asthma when I use it with my other medications.
But not being a confirmed asthmatic, I would not push unnecessary meds.
I do not see how using singular now, could benifit with a later possible diagnosis.
I think you need to get another opinion, perhaps your child needs to see a allergy or asthma specialits, if the pediatrician thinks that is the issue, they could confirm the symptoms.
Over the counter Claritin or Zyrtec could help with allergy issues, if you think that could be triggering the coughing.
I take claritin daily with singular, advair x2, and albuterol 1-6x a day, and occassionally oral steriods.
But as I say, I am a moderate asthmatic.
I must say there were some meds I took as a child that I would never want my children to take. It was like I was put on speed. I still take some of them, but the effect are not a strong now after 25+ yrs; Albuterol inhalers/Ventolin will have these effects, especially when the child first starts taking them. Also steriods.
I wish your child the best. And hopefully if she has asthma, it will be mild and easy to control. I grew up limiting my daily activities, and school activities due to my symptoms. See another pesiatrician or specialist and see if they come up with a close or similar determination as far as medications go. Ask about the side effects, and get an idea of the side effects vs. the symptoms.
My sister took her son to a specialist in Saratoga, that was very good. if that is in your area...