Allergy medications can cause behavior/emotional problems.
I am a psychologist who serves children under 3 years old for a state public health agency. My opinions, however, are my own and do not reflect those of the agency.
A nurse and I recently had a discussion about unusually aggressive and active behavior in a 2 year old. The first thought of the nurse was that the child might be bipolar with psychotic features. Then she mentioned that the child was taking Singulair (montelukast). I asked whether she checked the potential behavioral side-effects of the medication. I recommend that parents view the information that can be found in comments on www.medications.com/se/singulair Before you have your acting out child labeled and treated for a psychological disorder, it is critical to consider any other potential cause for the problem.
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Pulmicort is another subject of postmarket comments by parents. They say it causes behavior problems in young children as well:
www.medications.com/effect/tag/pulmicort
I would say, as a psychologist, that before your drag your badly behaving kid with asthma to a shrink, check to see if his asthma or allergy medication could be the culprit rather than the child .