| A | B |
| Milia | whitehead |
| Comedome | blackhead |
| Vesicle | small blister sac with clear fluid (poison ivy) |
| Papule | a pimple |
| Wheal | itchy,swollen lesion lasting a few hours (bug bite, hives) |
| Fissure | crack in skin (chapped lips) |
| Tumor | abnormal cell mass caused by excessive cell multiplication |
| Cicatrix | scar |
| Keloid | thick scar from excessive growth of fibrous tissue |
| Scale | thin plate of epidermal flakes (dandruff) |
| Bulla | large blister filled with watery fluid |
| Pustule | inflamed pimple containing pus |
| Tubercle | rounded, solid lump above, in or under the skin |
| Macule | discoloration of skin (freckle) |
| Seborrhea | caused by excessive production of sebum |
| Excoriation | skin sore produced by scratching or scraping |