Well since the attached picture doesn't show up, I'll explain all four
A. First-degree burn
The least severe burns are those that affect only the outermost layers of the skin (epidermis). After the initial shock, a first degree burn is the equivalent of a minor sunburn. Common symptoms of this would be:
•Reddish skin
•White border
•Some pain
B. Second-degree burn
The skin layer beneath the epidermis is called the “dermis.” It is the area that produces what eventually becomes the epidermis. When the dermis is burned – even slightly – it becomes a second degree (or partial thickness) burn.Once healed, scarring is a possibility. Symptoms of this may be:
•Blisters
•Scarring
•More pain
C. Third-degree burn
Third Degree burns, or full thickness burns, come with exposure to a heat source of more than a few seconds. The symptoms would then be:
•Max loss of skin
•Reduced feeling
•Almost whitish
D. Fourth-degree burn
These extend completely through the epidermis and dermis to underlying muscle and nerve endings and, as such, are extremely serious. When a victim experiences these types of burns, there may not be as much initial pain as that seen in third degree burns. This is attributed to the fact that the patient is likely in shock and damage is often done to nerve endings in the affected area as well as sweat glands, muscle tissue, hair follicles, and even bone
