To determine whether a cat has catnip, there are three main methods: touching with hands, checking whether the cat has hair loss, and using Wood's lamp. First of all, if you feel hard lumps on your cat’s skin, it may be cat moss. Secondly, if your cat is found to be experiencing abnormal hair loss, accompanied by symptoms such as redness, swelling, increased dandruff, and itching, then the probability of cat tinea will be greater. Finally, if the affected area is illuminated with Wood's lamp and green fluorescence appears, it can basically be diagnosed as cat moss. It is recommended that owners consult their pet's doctor promptly and use antifungal drugs for treatment.

　1. Touch with hands

Cat ringworm is a skin disease caused by fungi, which can cause scabs and ulcers on parts of the cat's skin. Therefore, the owner can use his hands to touch the area where the cat is suspected to be infected with catnip. If there are hard lumps on the skin, it may be catnip. It should be noted that because cat ringworm is contagious and can be transmitted to dogs, cats or owners, you need to wear disposable gloves when checking with your hands.

2. Check whether the cat is losing hair

Normal hair loss in cats is generally uniform hair loss all over the body. There is no partial hair loss, and there will be no baldness on the body. If you find that your cat is partially hairless and can directly see the skin, it is most likely cat moss. At the same time, because the cat keeps scratching the affected area, it will also lead to increased hair loss.

　3. View with Wood's lamp

If the owner cannot distinguish cat moss with the naked eye, he can use Wood's lamp to identify it. By irradiating the suspected infected area, if an apple-green fluorescent reaction is found, it means that it is likely to be infected with cat ringworm, and the accuracy rate is about 70%.