This video describes a pathological skin condition known as a melanocytic nevus. Melanocytic nevi are melanocytic neoplasm, acquired moles are well-demarcated and tan-brown papules. This video is a histopathological study and identification of microscopic changes that differentiate normal skin from melanocytic nevus. TIMELINE: 0:03 Introduction 0:27 Compound melanocytic nevus description 0:56 Histopathological specimen 1:00 Examining epidermis of pathological section 1:43 Causes of melanocytic nevus 3:31 End