"Why Does Liquid Nitrogen Freezing Cause Corns to Harden and Turn Yellow?"

Corn treated with liquid nitrogen cryotherapy may harden and turn yellow, potentially caused by local tissue necrosis, infection, or other factors. Patients are advised to seek medical attention promptly and undergo treatment under the guidance of a physician.

1. Local Tissue Necrosis

Liquid nitrogen cryotherapy is a treatment method that utilizes low temperatures to cause necrosis and shedding of diseased tissues. If proper disinfection is not performed during the procedure, it may lead to local tissue necrosis, resulting in the aforementioned symptoms. Typically, no special treatment is required, and the area can be disinfected with iodophor as prescribed by a doctor to prevent secondary infection.

2. Infection

Inadequate post-cryotherapy care, such as frequently touching the affected area with hands, can allow bacteria to invade and cause infection, manifesting as the described symptoms. In such cases, topical application of erythromycin ointment or mupirocin ointment under a doctor's guidance can help combat the infection and promote healing.

3. Other Causes

Trauma or compression to the corn site may also result in the observed changes. If no discomfort is present, no specific treatment is generally necessary. However, if pain occurs, medication like ibuprofen or celecoxib should be taken as prescribed by a doctor for relief.

In daily life, maintaining personal hygiene and keeping the skin clean and dry is crucial. A diet rich in vitamin-containing foods, such as apples, bananas, and dragon fruits, can help supplement essential nutrients for the body.