Why do blisters form when you are burned?
Burns are common accidental injuries in daily life, and the blisters that appear on the skin after burns are even more confusing. Why do burns cause blisters? What is the mechanism of blisters formation? How to properly treat blisters after burns? This article will give you detailed answers based on medical principles and hot topics on the Internet in the past 10 days.
1. The formation mechanism of blisters after burns

Skin blisters after burns are mainly caused by high temperature causing damage to skin tissue, triggering inflammatory reactions and leakage of body fluids. The following is the specific process of blister formation:
| stage | Physiological changes | result |
|---|---|---|
| high temperature contact | Damage to skin surface cells and dilation of capillaries | Local redness, swelling and pain |
| inflammatory response | The immune system releases inflammatory factors and increases vascular permeability | Exudation of tissue fluid |
| blister formation | Exuded tissue fluid accumulates between the epidermis and dermis | Formation of clear blisters |
2. Classification of scald blisters
Blisters can appear differently depending on the severity of the burn. The following are common burn classifications and blistering characteristics:
| Burn level | Damage depth | Blister characteristics |
|---|---|---|
| first degree burn | Epidermal layer only | No blisters, only redness and swelling |
| Second degree burns (superficial) | Epidermis and part of dermis | Large blisters, clear liquid |
| Second degree burns (deep) | Severe damage to the dermis | The blisters are smaller and the fluid may be cloudy |
| third degree burns | Full thickness skin and subcutaneous tissue | No blisters, charred or pale skin |
3. Correct way to deal with burn blisters
The treatment of blisters after burns is very important. Wrong handling may lead to infection or worsen the injury. The following are medically recommended correct treatment steps:
| steps | Operation | Things to note |
|---|---|---|
| 1. Cool the wound | Rinse with running cold water for 15-20 minutes | Avoid using ice cubes to prevent frostbite |
| 2. Protect blisters | Don't puncture the blister, keep it intact | Broken blisters need to be disinfected and covered with a dressing |
| 3. Disinfection and cleaning | Use iodophor or saline to clean | Avoid irritating the wound with alcohol or hydrogen peroxide |
| 4. Bandaging care | Cover with sterile gauze or dressing | Change regularly and watch for signs of infection |
| 5. Indications for medical treatment | Extensive or deep burns require prompt medical attention | Children, the elderly or diabetics need to be more cautious |
4. Hot topics on the Internet: Myths and truths about burns and blisters
In the past 10 days, discussions about burns and blisters have become quite popular on social media. The following are the key questions and professional answers that netizens are concerned about:
| Popular questions | Misunderstanding | truth |
|---|---|---|
| Can I use toothpaste on burns? | Toothpaste can cool down and reduce inflammation | Toothpaste may irritate wounds and increase the risk of infection |
| Do you need to pop the blisters? | Opening blisters heals quickly | Intact blisters are natural barriers and can easily cause infection if they are broken open on their own. |
| Can I touch water after being burned? | Do not allow the wound to get wet | Clean water can be used for flushing and cooling, but long-term soaking should be avoided. |
5. Tips to prevent burns
Avoiding burns is more important than treating them. The following are suggestions for preventing burns in daily life:
1.kitchen safety: When using the pot, keep the handle facing inward to prevent children from coming into contact with the heat source.
2.hot water management: Adjust the water heater temperature to below 50℃ to prevent burns during bathing.
3.Protective tools: Use insulated gloves or towels when handling hot items.
4.first aid preparation: Always have burn ointment and sterile dressings at home.
By understanding the causes of burn blisters and how to properly treat them, we can better respond to accidental injuries and protect the health of ourselves and our families.
check the details
check the details