It is a wound with damage to the skin (epidermis and dermis) mostly involving upper layers of epidermis. It is of various types - 

• Scratch
• Graze
• Pressure abrasion
• Impact abrasion

1. AIPGMEE 2011 – MCQ 10 – Bruise
2. RGUHS Karnataka PGET 2011 – MCQ 65
3. Physiology – MCQ 70 – Projection of fibers in Lateral geniculate body
4. Seroma – Cause, Mechanism, Management and Prevention