Generally speaking, coughing is a symptom of feeling too many emotions bubbling up and us not being able to express them. We feel so much yet we feel powerless to make any changes.
We also cough when we feel controlled and want to get away from a controlling person or circumstance.
In general, these emotions are associated with coughing:
there is a feeling of being suppressed, controlled, and manipulated
we aren't able to express ourselves
influential people "suffocate" us
we feel we aren't able to establish our identity
we feel like we are walking on eggshells
we feel we had "enough" of something
fear of abandonment
When we are looking for psychosomatic patterns of coughing and upper respiratory infection in children, we have to acknowledge that the parents, especially a mother (if she is a primary caregiver) can make a child feel controlled and suppressed.
The child does not yet know their place in the family hierarchy, and everything about the daily schedule of the child is controlled by, in this case, the mother.
Of course, mothers do not want to manipulate their children, but what matters in this case, is how the child feels and perceives its environment.
Wouldn't you feel controlled and maybe "suffocated" by your mother's constant presence, making you eat when it's time, making you wear what she wants you to wear, carrying you to places that she wants/needs to carry you to, and add onto that checkups with doctors and being taken care of by people you don't even know (grandmas, baby sitters, etc.).
At some point, it would start feeling like you had enough!
Because the above example is just a normal life of babies and toddlers, and because this is just how things are with kids let's ask ourselves what we can do to remedy our kid's constant coughing...
If possible, give your child a choice (let it chose between 2 toys, 2 colors of spoons, this or that fruit, mom's lap of dad's lap, etc.)
See a bubble of light around your child and you and acknowledge the difference between the baby and you (you aren't one and the same).