What is the difference between first-degree and second-degree burns in terms of symptoms?

The main differences between first-degree and second-degree burns lie in the depth of skin tissue damage and the associated clinical symptoms. First-degree burns superficially affect the outer layer of the skin (epidermis), while second-degree burns penetrate deeper to involve the outer layer and the layer directly beneath it (the dermis), resulting in clearer changes in the skin's appearance [3].

Symptoms of First-Degree Burns (Superficial Burns)

These burns are considered the mildest and only affect the skin's surface. Characteristic signs include pain in the affected area, clear redness caused by superficial inflammation, and mild skin swelling. A significant feature of first-degree burns is the absence of blisters, as the damage is limited to the epidermis only [3]. These injuries may heal within a short period, often estimated at one week, though skin response varies from person to person.

Symptoms of Second-Degree Burns (Partial-Thickness Burns)

These burns cause deeper damage, leading to more severe symptoms affecting the skin's appearance and texture. One of the most important symptoms is intense pain, resulting from heat reaching the deeper layers of the dermis. A distinguishing sign here is the appearance of blisters (vesicles) filled with fluid on the skin's surface, and the skin may appear dark red and take on a moist or shiny appearance due to fluid leakage from damaged tissues [3].

First Aid and Home Care

Regardless of the type of burn, the critical first aid step is to cool the area immediately under cool (not cold/iced) running water for 20 minutes, preferably within 3 hours of the injury. Avoid using ice or icy water directly [4]. Any clothing or jewelry near the injury site should be removed, while taking great care not to attempt to remove fabric stuck to the burn [4]. Do not apply any creams, oils, or butter to the burn, as these substances may hinder medical evaluation or increase the risk of complications [4]. For more advice on home procedures, read our article on First and Second-Degree Burns at Home: First Aid and When to Go to the Emergency Room? (Arabic).

When Is Medical Consultation Required?

You must go to the emergency room if the burn is large, or if it is located in sensitive areas such as the face, hands, feet, genitals, or joints. Medical intervention is also required if the burn is caused by chemicals or electricity, or if signs of infection appear, such as fever, increased pain, or the presence of pus. Burns that appear dry or leathery, or appear white, brown, or black, also require immediate medical evaluation [3].

Medical references

• Burn Evaluation
• Burns and scalds - NHS