What are these sudden lumps on my dog's neck? Should I be worried?

Question

My little Yorkie (3.5 yrs) all of a sudden developed little lumps on the back of his neck below his head. Trying to figure out what caused it, I thought possibly he had an allergic reaction towards something he ate. Pet's info: Dog | Yorkshire Terrier | Male | neutered | 3 years and 9 months old | 12 lbs

Ricardo Fernandez, DVM · Accepted Answer

Thanks for using Petco Pet Education Center, formerly Petcoach! These could be benign or malignant growths. These could even be due to an infection or an allergic reaction like you pointed out. This is often differentiated by an exam and a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

What are these sudden lumps on my dog's neck? Should I be worried?

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