"How Did a Large Blister Form After Applying Liquid Nitrogen to a Corn?"

A large blister appearing after liquid nitrogen treatment for corns may be a normal phenomenon or caused by improper care, infection, or other reasons. It is recommended that patients seek medical attention promptly and follow the treatment plan under the guidance of a doctor.

1. Normal Phenomenon

Liquid nitrogen cryotherapy is a treatment method that utilizes low temperatures to cause the necrosis and shedding of diseased tissue, suitable for conditions such as corns and plantar warts. After liquid nitrogen cryotherapy, the local skin may be damaged, potentially resulting in blisters. If the blister is small, no special treatment is generally required; simply maintaining the affected area clean and dry is sufficient. For larger blisters, a professional doctor should puncture them with a sterile needle, drain the fluid, and then apply ointments such as erythromycin ointment or mupirocin ointment for anti-infective treatment.

2. Improper Care

If the patient fails to properly care for the treated area after liquid nitrogen cryotherapy, such as frequently scratching the affected area with their hands, it may lead to skin damage and subsequently the aforementioned symptoms. In this case, patients should refrain from scratching the affected area to prevent worsening of the condition. Additionally, maintaining local cleanliness and hygiene is crucial, and iodine can be used for disinfection.

3. Infection

If the patient neglects personal hygiene after liquid nitrogen cryotherapy, allowing bacteria to enter the wound, it can lead to infection. In such cases, patients can take antibiotic medication under a doctor's guidance for anti-infective treatment, such as amoxicillin capsules or cefixime capsules.

Moreover, other factors like eczema or allergic dermatitis may also be involved. If patients experience additional discomfort or symptom aggravation, they should promptly seek medical attention at a hospital.