Oh mine has so many problems it's not even funny, elbow dysplasia, spinal pain, NSAIDs gave him a symptomless perforated ulcer so they had to remove half his stomach before it killed him...and it's all combined in him having behavioural issues with other dogs and strangers.
Now a blooming dust mite allergy 
He's on tablets - Apoquel, he's been hotspot free for about 2 months which is the longest in a year, so, looking good so far.
It's horrible for him when he gets one, he's so bothered by them and they're round his neck so a collar is no use.
Just to put it in perspective, his first elbow went as a puppy, he had surgery - was completely unbothered by it, the first we knew of the spinal pain was him becoming reactive, his second elbow went, I didn't notice, it took 3 days to diagnose his perforated ulcer (why it was such an emergency) because he just didn't seem that ill...he's so stoic it's ridiculous.
First hotspot I rushed him to the vets thinking it was a deadly reaction to his then painkillers
figured if I could tell something was wrong it must be terrible.
He's a nightmare with them, panting, pacing, licking at his leg, they make him more miserable than any other issue he's ever had, lol.