My dog has had reactive issues for the whole 8 months he’s been with me. First he had problems with other dogs only, which were fairly easy to deal with counterconditioning and making our “lets go”- command stronger. After a few months we started to have more setbacks with our training and he seemed to progressively become more reactive, not only towards other dogs but also towards other people, children and especially towards people in our yard and hallway (we live in an apartment complex). It went to the point that he barked and lunged at almost everything. We’ve been to the vet five times in the last five months, and his health should be okay. He has recurrent skin problems and his teeth were bad when he first came to me, but those should be fixed now. Although I feel that there could be some underlying health reason that causes him to behave this way, we haven’t had any luck in discovering what it is. Since his reactivity worsened, we’ve been training with lots of set up-situations with dogs and people. We’ve also just hung around with other dogs and people (bit like bat-style) while keeping him under the threshold. In training situations he works really well, even when the set up is really close to a real life situation. But still, in our walks he has no self control and he's really stressed about everything. It feels like he’s trying to do the command and bark/lunge at the same time, and it just causes him to be barking/lunging and in between turning around to look at me. I try to reward the contact to me (we use a clicker), but nowadays the contact has fallen shorter and shorter, though our training has increased. His barks don't often have the fear-sound in them nowadays, and it almost sounds more alert, so it feels like we’ve succeeded in making people and dogs not-so-scary but also somehow increased the reactivity. It also seems like his rewards, which we're previously very high value for him, aren't currently as rewarding as before. I've tried to find a more rewarding treat with no luck, as currently it feels like the treats have the same effect as clicking and offering small rocks. He’s a semi-active breed so he gets 2-3 hours of daily exercise/activation and I try to make sure that he also has relaxing walks by taking him to hike in the woods (then he’s usually off-leash) or by walking him at night (we avoid rush hours). What can I do differently? Does anyone have experience about increasing reactivity and if so, what was the cause?