Cryotherapy with Liquid Nitrogen Spray: A Cold Treatment for Skin Conditions
1. What Is Cryotherapy?
Cryotherapy is a medical treatment that uses extreme cold to destroy abnormal skin cells. It involves the use of liquid nitrogen, which has a temperature of approximately -196°C ( -321°F).
The nitrogen is applied in the form of a spray directly onto the targeted lesion, freezing and destroying the abnormal tissue.
2. What Skin Conditions Can It Treat?
Cryotherapy is commonly used to treat:
- Common warts
- Plantar warts (warts on the soles of the feet)
- Actinic keratoses (precancerous skin lesions, commonly found in fair-skinned individuals)
- Seborrheic keratoses
- Molluscum contagiosum
- Certain superficial skin cysts
-Some benign (non-cancerous) skin lesions
Advantages
- No surgery and no stitches required
- Quick procedure, taking only a few minutes
- Low risk of infection
- No use of chemicals or large wounds
- Patients can wash their face or shower as usual
Limitations
- The lesion does not fall off immediately; it typically takes 5–14 days
- May require repeated treatment if the lesion is thick or deep
- Some patients may experience hypopigmentation (lighter skin patches) or uneven skin tone
- There is a possibility of blistering or blood blisters
3. Preparation Before and After Treatment
Before the procedure
- Inform your doctor if you have any underlying medical conditions, are taking blood-thinning medications, or have a history of keloid scars
- No need to stop medications or make special preparations
After the procedure
- You can wash your face or shower as usual
- Avoid rubbing the treated area vigorously
- Do not puncture any blisters yourself
4. Skin Changes After Treatment
After the procedure, the following may occur:
- Clear blisters (serous blisters) within 1–2 days
- Blood blisters (hemorrhagic blisters) in areas with many capillaries or thin skin
- Blisters will gradually dry → form a scab → and fall off within 1–2 weeks
-New skin may appear slightly lighter or darker than the original skin
5. Post-Treatment Care
- Gently clean the area 1–2 times per day
- If blisters develop, do not puncture them—allow them to heal naturally
- If there is an open wound, it can be covered with a sterile bandage
- Apply antibiotic cream or medication as prescribed by your doctor
- Avoid direct sunlight until the skin returns to normal
6. Follow-Up Appointments
- Typically, a follow-up is scheduled within 1–2 weeks after treatment
- If the lesion has not fallen off, repeat treatment may be considered
- In some cases (e.g., deep warts), 2–3 sessions may be required, spaced 2–3 weeks apart
7. When to See a Doctor Before Your Appointment
Seek medical attention immediately if you experience:
- Unusually severe pain
- Large blisters or blisters with pus
- Fever or signs of infection (heat, redness, significant swelling)
- Recurrent bleeding from the wound
- Numbness or a tight sensation in the treated area
Summary
Cryotherapy is a safe, quick, and effective procedure for treating various skin lesions. However, results and responses may vary from person to person. Proper aftercare and follow-up are just as important as the treatment itself.
Source : Princsuvarnabhumi
**Translated and compiled by ArokaGO Content Team
PRINC Hospital Suvarnabhumi
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