My Dog Is Losing Hair On Neck And Has Small Red Bumps Too? Who Can Tell Me Any Ideas On Cause?

It can not be told what actually your dog is having without physical examination because many conditions can cause hair loss and bumps on the neck of your dog. These are allergy to flea, pollens, molds, and foods, scabies,  Cheyletiella or lice , pyoderma, ringworm infection, Cushing's disease, endocrine diseases, autoimmune skin diseases and almost all skin diseases.

Hair loss in dogs can be due to some underlying cause, so, it should not be ignored and visit to vet is necessary.

My dog has a little red spot on its neck and it doesnt have hair on it. Why?

My pug puppy has the same thing. My vet said it was an allergy and said to give him benadryl also wash him with baby shampoo, leave it on for 5 min and rinse.

I am thinking that maybe your dog has atopic dermatitis or atopy
either search it on the web or go to  the following website:
www.medi-vet.com

hope this helped!!!!!!!