I forgot to mention that she has been diagnosed with Tracheal collapse but we have meds from her vet for that. The tender spots are not prominent constantly (they are no visible now and not tender at all). But they tend to show up after we take her out for a walk and she comes back hot and panting from the walk (temps have been really high here in Korea). Our Yorkie has this habit of peeing and pooping outside and never in the house. So far, she pees quite ok now, light yellow in color. She has been eating regularly now and drinking water.