BURNS
1. Definition
Burn: Tissue injury caused by heat, chemicals, electricity, radiation, or friction, resulting in
damage to skin and underlying structures.
Key points:
Severity depends on depth, extent, cause, and location
Can lead to local tissue damage and systemic effects
2. Burn Types
Depth / Structures
Type Clinical Features
Involved
Superficial (1st
Epidermis Red, painful, dry, no blisters
degree)
Partial thickness Epidermis + part
Blisters, moist, painful, red or pink
(2nd degree) dermis
Full thickness Epidermis + dermis + Leathery, pale/brown/charred,
(3rd degree) subcutaneous tissue painless
Deep/full
Black, charred, no sensation, may
thickness (4th Muscle, bone, tendon
expose underlying structures
degree)
3. Assessment
History
Cause, time since injury, exposure, comorbidities
1. Definition
Burn: Tissue injury caused by heat, chemicals, electricity, radiation, or friction, resulting in
damage to skin and underlying structures.
Key points:
Severity depends on depth, extent, cause, and location
Can lead to local tissue damage and systemic effects
2. Burn Types
Depth / Structures
Type Clinical Features
Involved
Superficial (1st
Epidermis Red, painful, dry, no blisters
degree)
Partial thickness Epidermis + part
Blisters, moist, painful, red or pink
(2nd degree) dermis
Full thickness Epidermis + dermis + Leathery, pale/brown/charred,
(3rd degree) subcutaneous tissue painless
Deep/full
Black, charred, no sensation, may
thickness (4th Muscle, bone, tendon
expose underlying structures
degree)
3. Assessment
History
Cause, time since injury, exposure, comorbidities
