There are several types of scars, including:
**Hypertrophic Scars**: Raised and red scars that stay within the boundaries of the original wound. They form due to excessive collagen production during healing.
**Keloid Scars**: Similar to hypertrophic scars but extend beyond the original wound boundaries. They result from an over-aggressive healing process.
**Atrophic Scars**: Sunken scars that occur when underlying structures supporting the skin, such as fat or muscle, are lost. Common examples include acne scars and chickenpox scars.
**Contracture Scars**: These occur when the skin "shrinks" and tightens, often after burns, leading to restricted movement.
**Stretch Marks (Striae)**: These form when the skin stretches or shrinks rapidly, causing the collagen and elastin to rupture.
Scars form as part of the body's natural healing process, where fibrous tissue replaces normal skin after an injury.
