My dog has diarrhea, itching, and hair loss. What could be wrong?
I don't think this is seasonal shedding. I would be concerned about causes of hair loss and itching in a puppy, including fleas, mange, lice, infections (bacterial or yeast), and ringworm. A vet examination will be able to help you figure out the cause and best treatment.
I would also discuss the diarrhea with the vet. Possible causes include food intolerance or allergies, intestinal parasites, dietary indiscretion, bacterial or viral infection, stress colitis, among others. Even though Bear was dewormed, the vet should probably do a fecal floatation test to check for intestinal parasites.
Updated on September 23rd, 2025