Why Lumps May Appear on the Neck of a Cat?


Tumors on the cats’ body need attention, as it can threaten the life of the pet. Hard lump on cat’s neck may be a common lipoma, which is not dangerous with timely removal, but may also indicate the occurrence of malignant processes. It is impossible to diagnose the nature of the tumor yourself, without a biopsy. Therefore, the first thing the owner should do is to take the pet to the specialist.

Risk Factors

In the majority of cases the owners of older animals face lesions on the tumors on pets’ crest and neck. The appearance of soft lumps and balls caused by natural aging of the animal. Risk factors in this case are:

  • The age of the pet is over 8 years old;
  • Endocrine disorders;
  • Obesity;
  • The presence of parasites.

Only a veterinarian can accurately identify the nature of the lump, the cause of its appearance and offer methods of treatment. Self-treatment in the presence of formations in pets is not allowed.

Abscess on Neck

A lump on cat’s neck can be an abscess. It’s a cavity filled with pus. It appears on areas of wounds and injuries and can be the consequence of irritation of the skin by parasites, in response to which the pet has combed the wound. Symptoms of abscess:

  1. Homogeneous structure of the tumor.
  2. Redness and fever of the skin around the affected area.
  3. Pain when touching.

When abscess a cat is constantly trying to reach the tumor. If the pet can’t scratch its neck with its paw, the animal starts to rub against the furniture. Thus the animal is trying to get rid of the annoying lumps.

Since an abscess is a purulent inflammation, there may be a general deterioration in the health of the pet. The cat may become lethargic or irritable on the contrary.

Only a veterinarian can quickly eliminate the discomfort. The abscess is opened with a scalpel, then the cavity filled with pus is cleaned, and antiseptic treatment of the wound is carried out. If necessary, the vet can suture the wound and prescribe antibiotics to avoid the re-development of inflammation. The abscess can open by itself, but it is dangerous for the health of the animal. The cat can lick the purulent contents and there is a risk of re-infection of the resulting wound.

Photo of Cats with Lumps on Neck

big lump on neck of cat hard lump on cat's neck little lump on neck of cat lump on cat's neck

Malignant Tumors

A crusty lump on cat’s neck can pose a threat to the life of a cat. In older animals, the appearance of tumors may indicate cancer. Malignant tumors have no specific symptoms. Only a specialist can diagnose them. As a rule, when cancer cat feels unwell and loses strength, refuses to eat, begins to lose weight. However, these symptoms may also characterize other diseases, so you should immediately take the pet to a specialist.

For diagnosis, the vet will make an x-ray or MRI. When there is a suspicion of a malignant tumor, biopsy (removal of tumor particles for histological examination of tissue cells) is carried out.  According to the results of histology, a decision on further treatment is made. The lump is subject to complete removal, the animal is prescribed a course of chemotherapy.

Lipomas in Cats

If there is a black lump on cat’s neck and it easily rolls under your fingers and does not cause discomfort, the possible reason can be lipoma. The reason for the appearance of such seals is a feature of the functioning of the sebaceous glands of the animal. Often, the formation of lipomas is associated with endocrine disorders and obesity in elderly animals. The white bumps themselves are not dangerous but shall be removed, especially if located on the neck or head of the pet. The thing is benign lipoma with age can begin to degenerate into cancer, so veterinarians recommend to remove it timely.

A Bruise on the Crest

Lump on cat’s neck may also appear on the skin after injections. This occurs in two cases – incorrect formulation of the injection or too thick solution for injection. Lumps after an injection on the crest are harmless and acts nothing like a common hematoma. It resolves after a few days and does not require specific treatment. You should consult a vet in the event that there is an increase in the skin temperature around the lump and the animal is constantly trying to comb the affected area. Among the causes of lumps on the neck and crest in animals, an injury should be also noted. If the animal is walking freely on the street, it can fight with the other cat, and the bite may form a seal. This injury may cause abscess formation, so it should be immediately treated with an antiseptic.

In all other cases, you should not try to treat the cat yourself, or hope that the lump will resolve by itself. Only be a specialist can make an accurate diagnosis and help the animal.

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