It is not the asthma itself that affects physical development but the drugs that the child takes. If a child regularily takes uses a preventer inhaler containing a steriod eg becotide, serotide,...
chronic illiness effects on physical developent
if you mean development as in growth it really doesnt medically wise the medication could give you temerary irregular heart beat and such
it affects their mentality to tell the difference on what they want and need. they might confuse them with both.
it can affect the way children grow.