Ringworm is caused by a fungus and is an infectious skin disease. The fungus is present in the lesions and grows and multiplies to produce large numbers of hyphae and spores. Ringworm is likely to be transmitted if normal skin comes into contact with the lesion, either from someone else or from your own normal skin. This type of infection is called direct contact transmission. For example, if a person with ringworm shakes hands with someone else, they can infect each other. Ringworm can also be transmitted indirectly. All kinds of utensils used by the sick person, such as combs, pillows, hats, underwear, shoes and socks, and bath tubs, can be contaminated with fungus, and healthy people who touch or use these utensils can also be infected. In addition, poultry or livestock with ringworm can also be infected. Is it true that people or animals suffering from ringworm will definitely be infected once they come into contact with them? Of course not. First of all, it depends on the size and number of the fungus that is pathogenic. Also, it depends on the strength of the individual’s resistance. Of course, some people may ask: Can I get ringworm if I have not been in contact with the patient and his or her supplies? The answer is yes. Because fungi are widely distributed in nature, various kinds of fungi are often present in the mucous membranes of the skin on our bodies, and there are also fungi floating in the air. If there are conditions on our skin that are suitable for the growth and reproduction of fungi, the existing fungi on our body or the fungi in the air can grow and develop ringworm. As you can see, ringworm can be caused not only by infectious diseases but also by fungi that are present in the air or on the skin itself.