My dog is really itchy near her back tail and I noticed today a rough bump on and she is very red on her skin and itchy what could this possibly be? Pet's info: Dog | Yorkshire Terrier | Female | unspayed | 5 years and 11 months old

It could be an allergic reaction to an insect bite or a traumatic wound. Itchy bumps are almost always allergic in nature however. You can try topical soothing creams (sold at your local pet store) for allergic reactions, and cleaning it with chlorhexidine solution 3% or iodine diluted 50:50 with warm water. This will help some with the inflammation. If it still isn't better after 24-48 hrs then it is best to have your vet take a look at it and potentially give her stronger medications to treat it.

She could have a flea allergy dermatitis so you should check her thoroughly for fleas. I recommend that you use a monthly flea prevention, like Frontline, NexGard, or Advantage. If you don't see any fleas or flea dirt than she may just have a bacterial skin infection or seasonally allergies. You could bathe her with a medicated dog shampoo to see if that helps. If it continues than she should be examined by a vet for treatment.

Those little pustules are likely a bacterial infection. However, there is usually an underlying problem such as environmental allergies or fleas or food allergies that tend to trigger these infections. I would definitely recommend that she be evaluated by a veterinarian soon. They will likely recommend medication for the ear and the skin and discuss ways to help treat the underlying problem (most common would be environmental allergies). Best of luck and I hope she improves soon!

She may have allergies with a secondary bacterial skin infection. It sounds like she needs to be examined by a vet for treatment. An antibiotic, anti-histamine, and/or a corticosteroid may help treat her condition. You can also bathe her with a medicated dog shampoo and see if that helps.