Definition
- Is a small, inflamed macule or thin pigmented plaque, usually solitary, with a lichenoid tissue reaction on histology.
Cause
- Lichenoid keratosis is an inflammatory reaction arising in a regressing existing Solar lentigoor seborrhoeic keratosis.
- It is not known what causes the reaction, but triggers can include minor trauma such as friction, drugs, dermatitis, and sun exposure.
Risk
Management
- Lichenoid keratosis can be removed if desired by liquid nitrogen, electrosurgery or curettage.
- Multiple eruptive lichenoid keratoses may be effectively treated with the oral retinoid, acitretin.
