Cat's hair behind ears falls out

Considering that the hair behind the cat's ears has fallen out, it may be caused by ear mites, fighting, or skin diseases. If the cat has no obvious scratching phenomenon, you can first give the cat a deworming treatment with pesticides and apply antibacterial and anti-inflammatory drugs locally. Observe whether there is any improvement after 2-3 weeks of medication. If the cat has symptoms such as redness, itching, and dandruff in addition to hair loss, it is recommended to take the cat to the pet hospital for a skin examination and then treat it with targeted drugs.

1. Cat infected with ear mites

The main cause of hair loss behind the cat's ears is due to frequent scratching. When a cat is infected with ear mites, it causes severe itching, leading to frequent scratching of the ears, shaking the head, and black and brown secretions with an unpleasant smell in the ear canal. It is necessary to clean the cat's ear canal and use medication. During the treatment, it is best for the cat to wear an Elizabeth collar to avoid aggravating the infection by scratching.

2. Cat fighting causing hair loss

For sudden hair loss behind the cat's ears without skin problems such as dandruff and skin redness, it is necessary to consider whether the cat has fought. It is recommended to observe the cat first. If a new layer of hair grows in the hairless area after a week, there is nothing to worry about. If the hairless area increases in size or shows signs of lesions, it is advised to take the cat to the pet hospital to check for obvious fluorescence under Wood's lamp inspection.

3. Cat skin disease caused by infection

If the cat has symptoms of increased dandruff and crusting behind the ears in addition to hair loss, it is mainly caused by fungal or bacterial infections. A definitive diagnosis requires a microscope examination at the pet hospital. Usually, fungal infections cause extensive hair loss, itching, and skin crusting. Long-term illness can also cause skin thickening and redness. For small-area fungal infections, topical medications can control them well.