Why is my dog losing so much hair and scratching after meds?

This is probably due to an allergy, although it could also be infection or mites. First of all, in order to rule out skin parasites, you will need to treat with a high quality flea treatment, then ask the vet to perform a skin scrape - this might reveal an infection or a mite infestation. If all of those came back negative, the next step is to treat the allergy symptomatically and try to discover the cause of the allergy. Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollens, dust etc etc). Some medications can be given by the vet in order to repair any possible skin lesions (like steroids and antibiotics). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

A vaccine is not needed here. They may have mange or other infection (bacterial or fungal). Ideally, they should be seen by a veterinarian to diagnose the cause. Any treatment will depend on the diagnosis. They will likely require ongoing care until symptoms resolve.

It is possible that the underlying cause may be allergic skin disease and long term management may be required with medication, specialist shampoos for yeast and bacteria which are common in itchy/damaged skin and specialist diets and supplements such as viacutan. Allergies are possible to airborne pollen even in urban areas as well as foods and dust mites etc and cannot be ruled out in any location

With the weight loss as well as the skin condition I would recommend a blood test to rule out internal diseases such as liver disease as well as a skin scrape and possible biopsy in order to fully investigate the underlying cause and to guide the most appropriate treatment

Hello! A picture of the lesion would help us give more helpful input. However, if Shiloh's skin is flaky and itchy, it could be a number of things, including superficial pyoderma, demodicosis, sarcoptes, yeast dermatitis, and ringworm. It is difficult to narrow down the causes without doing an exam on her or at least seeing the lesions, but it is very likely some sort of infection (whether bacterial, yeast, or parasitic) so I do recommend bringing Shiloh to the vet. Your vet will be able to determine the cause, and Shiloh will likely need prescription medication (antibiotics, antifungals, or anti-parasite, along with possible medicated shampoo) to clear the issue. Depending on the severity of the issue on her skin, it very likely might not improve without prescription meds, so it is worth having her seen as soon as possible. Additionally, depending on her age, she may have some underlying condition that might be making her skin susceptible to infection, such as allergies or hypothyroidism. I hope this helps.

Thank you for submitting your question regarding your dog. If your at home treatments have not been effective, then it is time to see his veterinarian. He will likely need skin testing to look for mites or ringworm. If these tests are negative, allergies may be a possibility. He will need prescription medications to control the itchy and allow the hair to grow back. I hope this information helps!

It is hard to say what is causing Bacardi's problems. The third picture you included looks like pus, which would indicate infection and would need antibiotics to treat. Some dogs can be allergic to fleas, and it may only take 1 bite to make them itchy all over. If you are seeing scabs from where you applied a flea medication or flea collar, it may be irritating the skin so I would recommend removing it and bathing with dog shampoo thoroughly. Causes of itching in dogs include fleas or flea allergies, mites, or skin infection. The hair in the second picture looks like normal shedding to me, but if you feel it is weird for Bacardi, it could be caused by inflammation or from the extra itching she is doing right now. You can try a shampoo like Dechra MalAcetic Ultra Shampoo, but if it doesn't respond in a day or two, Bacardi should be seen by a vet as she may need oral medications to control the itching.