Petco Text Logo
Petco Pet Logo

My dog has a puss-filled ear lump. When should I take her to the vet?

Updated On September 23rd, 2025

My dog has a puss filled knot on her ear, it is about the size of a quarter. Blood and puss come out when the are is touched. I have been putting ointment on it and keeping it clean. The hair has fallen out in the area that is inflamed.

5 Answers

Most Helpful Answer

Image profile

Answered By Destini R. Holloway, DVM

Veterinarian

Published on November 22nd, 2016

Unfortunately this sounds like an abscess and needs to be drained by your vet followed by oral antibiotics to successfully treat this area. When an abscess is present the body has walled off the area of infection with a thick layer of skin, and although this is beneficial for the pet because it prevents the infection from spreading to the rest of the body, it also doesn't allow topical medication to penetrate the area either. Which is why oral antibiotics prescribed by your vet are ultimately needed here.

Vote icon

1Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Image profile

    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on

    Your poor pup! It sounds like she may have an abscess on her ear. It will need to be drained and flushed sterile, and she will need oral antibiotics to treat it. Topical ointment will not cure it, so you need to take her into the vet. I would take her into the vet now, as it needs immediate medical attention.

    Vote icon

    0Pet Parents found this answer helpful

  • Image profile

    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on July 29th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! This lump you describe could potentially be something like an abscess for example. However, other things are possible. I do think though that this can wait until tomorrow morning unless his demeanor or appetite worsened. Ear infections are fairly common. The good news is that these usually respond readily to therapy when treated appropriately. I recommend that you have Buddy evaluated by your veterinarian for further assessment and treatment. If an abscess was noted, further local therapy with drainage and antibiotics would be recommended. At the same time the ear infection could be started on treatment. Good luck and best wishes!

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Tomasz Wnuk

    Veterinarian

    Published on June 28th, 2020

    Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. It looks like a small abscess or hair follicle infection. I don't think it is anything urgent, you can see your regular vet tomorrow to sort this out. Your Olivia will probably need an antibiotic cream or ointment. If it is a small abscess, your vet may want to pop it to let the puss out.

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Destini R. Holloway, DVM

    Veterinarian

    Published on March 11th, 2017

    Poor puppy. : ( It sounds like your pet developed an abscess (bacterial infected pocket) on the top of her head. These are caused by trauma or punctures to the skin that introduced bacteria just underneath the skin, which in turn lead to pus encapsulated under the skin. She needs to have this abscess completely drained by your vet and placed on oral antibiotics for roughly 10 days. Her neck may be sore too because her lymph node is located in this area and it may be swollen because it is trying to drain this infected area. Take her in to the vet soon for treatment and she should be much improved within a few days, once she starts her antibiotics. Best wishes.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored