What does it mean if a cat keeps cleaning itself in one spot constantly?

Excessive grooming in cats often means that something is wrong with the cat. Common causes behind a cat licking a certain area repeatedly are:

- Insect bites or stings.

- Skin diseases, e.g. dermatitis or alopecia.

- Parasites, e.g. fleas, mites or lice.

- Ear infections.

- Toothache or other oral pain.

- Stress, anxiety or boredom.

- Allergies or sensitivities.

- Wounds, injuries or burns.

- Endocrine diseases, e.g. diabetes or Cushing's syndrome.

- Kidney disease.

- Behavioral issues.

If you notice that your cat is excessively grooming itself in one spot consistently, take them to the vet to rule out any underlying medical problems.