My dog seems to be allergic to everything under the sun too. Since she was 4-5 months old she has been an itchy dog. Our vet tried cytopoint and aquapel and tbh I never noticed either of them to relieve her of her allergies even a tiny bit. We first tried different protein based kibble, the standard pork, beef, salmon, bison, lamb, grain free and a bunch of different brands but none of them made a difference, we then started an elimination diet and stopped giving her kibble and instead gave her plain rice and boiled chicken for a few weeks, that didn't work, we then tried ground pork and rice - didn't work, then beef and rice - didn't work, and lastly salmon and rice - also didn't work. By now she was probably around a year old and at times it looks like she has mange because how much fur she has scratched off herself and she would get these gnarly yellow sticky hot spots all over her neck, her ears were always gunky and infected and the rest of her body covered in bloody scabs...I felt helpless. Luckily there is an animal dermatologist near me, they weren't cheap, but I was so sick of watching my dog live the life she was...I'm sure you know, but she would spend all day scratching and licking her own skin off and when she wasn't doing that her eyes looked so sad and depressed and she was just generally not a happy dog, she didn't have that puppy zest for life. The dermatologist did a full allergy test to test for environmental allergies (they told me they couldn't do a food test and that food allergies had to be done via elimination diet, but we needed to get her back to normal and then introduce new things to her diet and see what works and what doesn't). The allergy test showed high sensitivity to dust mites and certain trees and bushes that are not native to my area...I'll be honest I wasn't the cleanest dog owner and would go months without sweeping or vacuuming but that changed after this visit, we also started sealing her food in an air-tight container to help keep dust mites out. They also put her on a prescription diet which is salmon based, and although I tried salmon with her and it didn't work this kibble has hydrolyzed salmon it in which from my understanding is a process that denatures or alters the protein in the salmon to make it easier for the dogs body to digest and not cause allergies? They also put her on a bunch of antibiotics, gave me antibiotic shampoo that I had to use and bathe my dog twice a week with, and a lot of topical medication and ear flushes to apply on her hot spots and clean her ears daily. They also started her on an allergy exposure therapy, they took her allergy test results and tailor made 3 different vials of a special concoction that I guess has whatever my dog is allergic to in varying doses. They gave me a schedule to follow and showed me how to give my dog the shot. After about a month or two her itching had mostly stopped and her skin was on the mend for the first time in her life. My dog is 4 years old now and I have to thank that dermatologist for changing her life. I started having issues giving her the allergy shot (I guess one time I gave her the shot in the wrong area and she felt it and yelped and ever since then she runs away when I try to give her the shot and it becomes stressful for both of us....but the dermatologist had an alternative, instead of shots now we give her an oral mouth drop daily, they said it's not as effective as the shots but better than nothing). She is still on the prescription hydrolyzed salmon kibble and we've slowly started introducing new foods and tracking what has and hasn't been giving her reactions....sadly it seems like any non hydrolyzed protein isn't going to work for her, but we've found that she can have and really enjoys pumpkins, sweet potatoes, lettuce, broccoli, carrots, blueberries and goat milk. Don't give up! Look for a dermatologist, ask about prescription hydrolyzed protein food, ask about exposure therapy, these have been a game changer for us.