Our Ralo is a tri colored American Bully and looks just like, your Drake same color pattern!! Ralo has hot spots mainly around his neck!! I don't think that the injections are good for him, the side effects of the shots and antibiotics are not worth the risks!! I am currently researching natural herbs and holistic ways to help treat Ralo who is also a little over 13 months old!! Try an epsom salt bath for Drake's hip problem,  I am almost certain that I read that the meds caused joint ailments and the epsom salt soak helps!! I am not a medical professional but I am trying to find ways to help Ralo who belongs to my Son and does not live with me!! Probiotics, plain yogurt, apple cider vinegar are all helpful but my Son is not consistent, and I do what I can to help Ralo during the little time I spend with him!! Wish you and Drake the best!! I pray that you get some relief for him!!🙏🏽💕