All our pups shed more with increased temps...especially after a bath.
As far as Apoquel is concerned, we have given it short-term to many(less than 50) of the rescues we've taken in with no signs of adverse reaction. Only one was on it long term and he(my personal dog) was an extreme case. Special diet, allergy shots, Apoquel worked for him for many years. He passed at 10. This is not to say that I haven't heard of adverse reactions from it...I have! But I think that some dogs tolerate it and some do not. You should be aware and on the look out for undesirable side-effects. Vets are not so quick to warn about side effects from medications they sell for profit. That, and the canine drug reps will insist that there are ZERO side effects...which is BS.