Small hard bump on cat's ear

A small hard bump on a cat's ear may be caused by mosquito bites, ringworm, or ear cartilage hematoma.

1. Mosquito bites

Although cats have thick fur, the fur around their ears is relatively sparse. Therefore, during the summer when mosquitoes are abundant, cats are easily bitten by mosquitoes, resulting in small hard bumps. This is not a big problem and usually disappears in 2-3 days. However, owners can install mosquito nets during the summer to prevent mosquitoes and use methods such as swatting mosquitoes and plant insecticides to repel them. Do not use mosquito coils or electric mosquito repellent liquids, as long-term use can lead to cat poisoning.

1. Ringworm

When a cat has ringworm, it often scratches its ears with its hind legs due to itching, causing hard calluses on the ear surface. This is accompanied by redness, hair loss, and other symptoms. It is important to take the cat to the pet hospital in time for a scraping examination and treat it with drugs containing terbinafine. Additionally, wear a neck collar to prevent further scratching. If not handled promptly, the small hard bump will transform into a large area of ringworm and spread throughout the body, affecting the cat's normal life.

1. Ear cartilage hematoma

If a cat has an ear cartilage hematoma, a small hard bump will appear on the ear, with a significant fluctuation sensation. If it is punctured, a large amount of blood will flow out. The cause is mainly due to the rupture of the ear cartilage vessels, allowing blood to accumulate continuously between the ear cartilage skin and soft cartilage, resulting in swelling. If a cat has an ear cartilage hematoma, it should be taken to the pet hospital for treatment promptly.