ungrouped: Paronychia Acute Chronic Chevron nail Congenital onychodysplasia of the index fingers Green nails Half and half nails Hangnail Hapalonychia Hook nail Ingrown nail Lichen planus of the nails Longitudinal erythronychia Malalignment of the nail plate Median nail dystrophy Mees' lines Melanonychia Muehrcke's lines Nail–patella syndrome Onychoatrophy Onycholysis Onychomadesis Onychomatricoma Onychomycosis Onychophosis Onychoptosis defluvium Onychorrhexis Onychoschizia Platonychia Pincer nails Plummer's nail Psoriatic nails Pterygium inversum unguis Pterygium unguis Purpura of the nail bed Racquet nail Red lunulae Shell nail syndrome Splinter hemorrhage Spotted lunulae Staining of the nail plate Stippled nails Subungual hematoma Terry's nails Twenty-nail dystrophy
Scars (permanent): People who get acne cysts and nodules often see scars when the acne clears. You can prevent these scars. Be sure to see a dermatologist for treatment if you get acne early — between 8 and 12 years old. If someone in your family had acne cysts and nodules, you also should see a dermatologist if you get acne. Treating acne before cysts and nodules appear can prevent scars.
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