Physical Injury Phase of Burns Wounds

This includes direct and indirect physical injury. 

1. Immediately following skin surface exposure to thermal source, the resultant direct injury leads to necrosis of interface skin, which is called ‘direct physical thermal injury’. 

2. Although the thermal source causing the direct injury is removed, the heat does not dissipate from the skin immediately. 

The residual heat continues to produce a cumulative thermal effect which causes secondary thermal injury to the skin. This secondary trauma usually persists for 6–12 h. This is called the ‘indirect physical injury phase’.