Poor callum, sending you loads of energie maz.
Duncan has not been diagnosed with asthma but if he gets a cold and a cough it always goes to his chest and he needs a nubulizer and mask and this can last for weeks, but when its past he's ok...
Hope callum grows out of it as it's not nice....
Last summer we both had a skin problem where we came out in a big red rash, duncan's was on his body so it wasn't bad but i got mine on my neck and face, we were then diagnosed with nettle fever and were told it could last upto 3 years before it went away, and if it went away it could come back at anytime....after about 2 months it went away and (touch wood) has not returned....hope callums goes away soon hun....
I know all this is probably not helping much but there is hope that it will all go away and he'll be fine....
I am a great beleiver in homopathy and you could always try this as it will not do your little angel any harm or maybe baby/small child akkupuncture, it really helped us...xxx
good luck