How is morphology of warts?

➢ Different kinds of warts are identified on the basis of their gross appearance and location and generally are caused by distinct HPV subtypes. ➢ Verruca vulgaris :most common type, can occur anywhere but most frequent on the hands (dorsal surfaces and periungual areas) It appears as a gray-white to tan, flat to convex, 0.1- to 1-cm papule with a rough, pebble like surface. ➢ Verruca plana, or flat wart : common on the face or dorsal surfaces of the hands. These warts are flat, smooth, tan macules. ➢ Verruca plantaris and verruca palmaris : occur on the soles and palms, respectively. These rough, scaly lesions can reach 1 to 2 cm in diameter and may coalesce to form a surface that can be confused with ordinary calluses