Cat Bump on the Head, Nose, or Face: What to Do
By Dr. Zubair Khalid, DVM, MS, PhD ·
A cat bump on the head is any new swelling, lump, or firm spot on your cat's skull, nose, or face. Some are harmless and fade on their own, while others point to infection, trauma, or cancer that needs treatment. The right next step depends on how fast it appeared, whether it hurts, and whether your cat has other symptoms.
This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- A soft, squishy bump that shows up after a fight or a fall is often an abscess or a fluid pocket, and it usually needs veterinary drainage and antibiotics.
- A firm bump that grows slowly over weeks to months is more concerning for a tumor and should be checked with a biopsy.
- Any bump near the eye, or one that comes with squinting, discharge, or a bulging eye, needs same-day veterinary care.
- Facial swelling with nosebleeds, sneezing, or trouble breathing can signal a mass or a fungal infection inside the nose [1][2].
- Never squeeze, poke, or try to drain a bump at home. You can spread infection or cause bleeding.
What a Cat Bump on the Head, Nose, or Face Looks Like
Bumps on a cat's head come in many forms. You might feel a pea-sized knot under the skin, see a raised area that pushes the fur up, or notice one side of the face looks puffier than the other. Some bumps are warm to the touch. Others are cool and firm.
Location matters. A bump on the forehead or the top of the head is often easy to spot because the fur there is short. A cat bump on the nose can look like a swollen bridge or a crusty sore. A cat bump on the face near the cheek or jaw may only show up when you pet your cat and feel a hard spot.
A cat bump on the eye area is different. Swelling around the eye can make the eyelid puffy, the eye look sunken or bulging, or the third eyelid slide across. These signs are serious because the eye itself can be damaged.
What Is Normal
Cats have natural lumps and bumps. The bony ridge along the top of the skull, the cheekbones, and the jawline can feel prominent, especially in thin cats. Small scabs from a scratch are common and heal in a few days. A tiny, firm, movable lump under the skin that never changes size is often a benign fatty growth or a cyst.
What is not normal is a bump that is new, growing, painful, bleeding, or changing the shape of your cat's face.
Main Causes of a Cat Bump on the Head
The list of possible causes is long, but most cases fall into a few groups: trauma, infection, and tumors.
Trauma and Swelling
Cats hit their heads on furniture, fall from heights, or get bumped by a car. A blow to the head can cause a soft swelling called a hematoma, which is a pocket of blood under the skin. It can also cause a seroma, which is a pocket of clear fluid. These often appear within hours of the injury.
A cat bite or scratch can create a small puncture that seals over. Bacteria trapped under the skin then form an abscess, which is a painful, pus-filled lump. Abscesses on the face and head are common after fights.
Infections
Fungal infections can cause facial swelling and nosebleeds. One report described a cat with left-sided facial swelling and nosebleeds caused by Blastomyces dermatitidis, a fungus found in certain regions of the United States [1]. The cat improved after eight months of itraconazole treatment [1]. This is rare, but it belongs on the list if you live in an endemic area.
Cowpox is another infectious cause. A human case report described a cat that first showed only eye disease, and the exposed person developed progressive one-sided facial swelling with fever [3]. Cats are incidental hosts for cowpox, which is more common in the United Kingdom [3]. This is not a typical cause in the United States, but it shows how an infection can cause facial swelling without a visible skin wound.
Tumors and Growths
Not all lumps are cancer, but some are. A nasal angiofibroma is a tumor inside the nose that can push the face outward. One 14-year-old cat had right-sided nosebleeds, right facial swelling, poor appetite, and sneezing, and the mass was confirmed by biopsy [2]. The cat was treated with stereotactic body radiation therapy given in three daily doses [2].
Other tumors can appear on the head as a skin mass. A 13-year-old cat had a history of a skin mass on the head, and necropsy later found an apocrine adenocarcinoma along with a skin condition called paraneoplastic alopecia [4]. This shows that a head mass can sometimes be linked to a tumor elsewhere in the body.
Some tumors are benign and cured by surgery. A glomus tumor, which is a rare growth, was removed from a cat's body wall with clean margins and did not recur at a six-month check [5]. That case was on the abdomen, but the principle holds: a single, removable lump often has a good outcome when it is taken off early [5].
Cause Table
| Cause | Typical clues | How urgent |
|---|---|---|
| Trauma (hematoma, seroma) | Appears hours after a fall or hit, soft and squishy, may bruise | Same-day vet visit |
| Abscess | Warm, painful, fast-growing, may drain pus, often after a fight | Same-day vet visit |
| Fungal infection | Facial swelling with nosebleeds or sneezing, slow onset [1] | Prompt vet visit |
| Nasal tumor | One-sided swelling, nosebleeds, sneezing, poor appetite [2] | Prompt vet visit |
| Skin tumor | Firm lump that grows over weeks, may ulcerate or bleed [5][4] | Prompt vet visit |
| Cyst or benign growth | Small, movable, unchanged for months | Routine visit |
Red Flags That Make It an Emergency
Some signs mean you should stop reading and call an emergency clinic now.
- Trouble breathing, open-mouth breathing, or noisy breathing
- A bump near the eye with a bulging eye, squinting, or sudden vision loss
- Heavy bleeding from the nose or mouth that does not stop
- Collapse, confusion, wobbling, or a seizure after a head injury
- A bump that is hot, spreading fast, and making your cat cry out in pain
- Refusing all food and water for more than 24 hours
A head injury with any neurological sign is always an emergency. So is any swelling that blocks the airway.
Safe Things You Can Do at Home While Waiting
You cannot diagnose or treat a bump at home, but you can keep your cat safe and comfortable until the vet sees them.
Keep Your Cat Calm and Indoors
Stress makes swelling and pain worse. Put your cat in a quiet room away from other pets and children. Use a carrier if you need to move them.
Do Not Touch or Squeeze the Bump
Squeezing can push infection deeper, cause bleeding, or spread tumor cells. Do not apply heat, ice, or ointments unless your vet tells you to.
Take Notes and Photos
Write down when you first noticed the bump, how fast it changed, and any other symptoms. Take clear photos from a few angles. This helps your vet judge how quickly things are moving.
Watch for Related Signs
If your cat is also shaking their head or scratching at an ear, the problem may be in the ear instead of the skin. See Cat Shaking Head And Scratching Ear and Cat Scratching Ear A Lot And Shaking Head for more on those signs.
If you notice a scab or raw patch that looks like a hot spot, Cat Hot Spot or Something Else? How to Tell and What to Do can help you tell the difference.
What the Veterinarian Will Check and Test
Your vet will start with a full physical exam. They will feel the bump, measure it, check whether it is fixed to the bone or movable, and look inside your cat's mouth, nose, and ears. They will also check the eyes and the lymph nodes under the jaw.
Common Tests
- Fine-needle aspiration: a thin needle collects cells from the lump. This is quick and often done in the exam room.
- Incisional or excisional biopsy: a piece of the lump, or the whole lump, is removed and sent to a lab. One case report used excisional biopsy with 1 cm lateral margins and a deep fascial plane to remove a tumor completely [5].
- Imaging: X-rays or computed tomography (CT) can show whether a mass is inside the nose or bone. In one case, CT with contrast found a mass in the nasal cavity and areas of bone loss [1]. In another, CT helped confirm a nasal mass before treatment [2].
- Blood work and urinalysis: these check your cat's overall health before anesthesia or treatment.
Treatment Depends on the Cause
Abscesses are usually drained and treated with antibiotics. Fungal infections need long courses of antifungal medicine, sometimes for many months [1]. Tumors may be removed surgically, treated with radiation, or managed with other therapies depending on the type and stage [2].
If the lump turns out to be a skin growth, Cat Skin Bumps and Lumps: What the Vet Will Do and How Much It Costs explains the typical steps and cost ranges.
Prevention and Monitoring
You cannot prevent every lump, but you can lower the risk and catch problems early.
Reduce Fight and Injury Risk
Keep your cat indoors or in a secure outdoor enclosure. This cuts down on bite wounds, abscesses, and car accidents. If you have multiple cats, watch for bullying and separate them at feeding time.
Check Your Cat Weekly
Run your hands over your cat's head, face, neck, and body once a week. Feel for new bumps, scabs, or tender spots. Look at the nose and eyes for discharge or swelling. Early detection makes treatment easier.
Track Any Bump You Find
Measure the bump with a ruler or compare it to a coin. Write down the date and size. If it grows, changes shape, or starts to hurt, call your vet. A bump that stays the same size for months is less worrying than one that doubles in a week.
Follow Up After Treatment
If your cat had a lump removed or treated, keep every recheck appointment. One cat treated with radiation had a partial response confirmed by CT about six months later, and disease progression was found much later [2]. Regular imaging and exams catch recurrence early.
Limitations and When to Contact a Veterinarian
This article cannot tell you what your cat's bump is. Only a veterinarian who examines your cat and runs tests can do that. Individual cases need a veterinarian.
Call an emergency clinic now if your cat has trouble breathing, a bulging eye, heavy nosebleeds, collapse, or a seizure after a head injury.
Call your vet the same day if the bump appeared suddenly, is warm and painful, is growing fast, or sits near the eye.
Schedule a routine visit within a few days if the bump is small, firm, not painful, and has not changed. Even a quiet lump deserves a look.
Frequently Asked Questions
Is a bump on my cat's head always cancer?
No. Many head bumps are abscesses, cysts, hematomas, or benign growths. Cancer is possible, especially with firm lumps that grow over weeks, so a vet exam and a sample of the lump are the only way to know for sure.
Can I pop an abscess on my cat's face at home?
No. Popping an abscess can push infection deeper, cause heavy bleeding, and leave a wound that will not heal. Your vet can drain it safely, flush it, and prescribe the right antibiotic.
Why does my cat have swelling on one side of the face?
One-sided facial swelling often points to a problem in the nose, sinuses, tooth root, or eye on that side. Causes include fungal infection, tumors, and dental disease [1][2]. Your vet will examine the nose, mouth, and eyes and may recommend imaging.
How fast can a facial tumor grow in a cat?
Growth speed varies a lot by tumor type. One nasal tumor showed a partial response to radiation at about six months, then progressed by roughly 21 months after treatment [2]. Your vet can track size with measurements and repeat imaging.
Should I worry about a small bump that has not changed in months?
A small, stable, movable bump is often harmless, but it still deserves a check at your cat's next routine visit. If it starts to grow, bleed, or cause pain, book a sooner appointment.
What if my cat also has ear or skin problems?
Head and face bumps can show up alongside ear or skin disease. If your cat is scratching or shaking their head, see Cat Shaking Head And Scratching Ears Treatment for steps to take.
Related Articles
- Cat Shaking Head And Scratching Ear
- Cat Shaking Head And Scratching Ears Treatment
- Cat Scratching Ear A Lot And Shaking Head
- Cat Hot Spot or Something Else? How to Tell and What to Do
- Cat Skin Bumps and Lumps: What the Vet Will Do and How Much It Costs
- Cat Scratching Its Ears Raw: What to Do Right Now
References
- Epistaxis and Facial Swelling Due to Nasal Blastomycosis in a Cat. Journal of the American Animal Hospital Association, 2024.
- Treatment of a nasal angiofibroma in a cat using stereotactic body radiation therapy. Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 2023.
- A Case of Cowpox Presenting as Progressive Unilateral Facial Swelling and Fever Without Any Skin Lesions. Case reports in infectious diseases, 2026.
- Putative paraneoplastic alopecia in a cat with apocrine adenocarcinoma. Veterinary dermatology, 2025.
- Glomus tumour of the abdominal wall in a cat. JFMS open reports, 2025.