my dog has constant itching, loss of appetite, does not play and the skin is full of rashes and hair is falling
Dermatological problems can have many causes. Therefore, it is essential to perform a comprehensive diagnostic protocol, starting with simple and low-cost diagnostic tests that will allow to rule out the most common causes. Later on, it may be necessary to resort to more complex and specific tests to rule out allergies, autoimmune diseases, hormonal pathologies, etc.
The protocol should generally include:
- External deworming
- Trichogram: observing skin samples under a microscope.ant
- Skin scraping in the area of injury
- Woods lamp: it allows to discard fungal problems
- Blood tests
- Allergy tests
- Elimination diet
- Specific tests against other causes. This should be assessed by your veterinarian after ruling out the causes mentioned above.
On the other hand, treatment with corticosteroids to reduce itching or baths with shampoos + antibiotics may be necessary to eliminate skin infections. But for those treatments you should visit your vet in order to find a cause and afterwards follow vet instructions for possible specific treatments.
Keep her from scratching, licking or rubbing the irritated area, and as soon as you can take her to the vet.
All the best.