The absence of a skin layer is referred to as aplasia cutis congenita (ACC), a rare congenital condition.
Understanding Aplasia Cutis Congenita (ACC)
Aplasia cutis congenita (ACC) is a condition where one or more layers of skin are missing at birth. This can be:
- Focal: Affecting a small, specific area.
- Extensive: Affecting larger areas of the body.
Layers Affected
ACC may involve the absence of:
- Epidermis: The outermost layer of skin.
- Dermis: The layer beneath the epidermis.
- Subcutaneous tissue: The deepest layer, made of fat and connective tissue.
Causes of ACC
While the exact cause of ACC is unclear, it's generally understood to stem from:
- Impaired prenatal skin development: Issues during fetal development that prevent the complete formation of skin layers.
Key Characteristics of ACC
- Congenital: Present at birth.
- Rare: Uncommon in the general population.
- Variable Severity: Can range from small lesions to larger areas of missing skin.
Clinical Implications
The severity of ACC varies, and the missing layers can leave the affected individual at risk of:
- Infection: Due to lack of protective skin layers.
- Fluid loss: Potentially leading to dehydration.
- Scarring: After the area heals.
Summary Table: Aplasia Cutis Congenita
| Feature | Description |
|---|---|
| Condition | Aplasia Cutis Congenita (ACC) |
| Definition | Absence of one or more skin layers at birth. |
| Layers Affected | Epidermis, dermis, and occasionally subcutaneous tissue. |
| Cause | Impaired prenatal skin development. |
| Presentation | Focal or extensive absence of skin. |
| Clinical Risks | Increased risk of infection, fluid loss, and scarring. |
