40 year old male presenting with finger and #hallux toes #na | Figure 1

40 year old male presenting with finger and #hallux toes #nail destruction and discoloration. Duration 1 year. Previous tx - OTC antifungal oints woth no change. I have taken nail clippings. Suggestions to send for histo? DDX #Lichen-planus ?

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#Onycholysis from use of cosmetic nails. The nail plate is separated from the harsh removal of fake nails for years. With straight to consumer advertising, there's too much misinformation available....like every nail problem is fungus.

24 year old female. Left thumb #nail with presentation above. No other nail involvement. 2 year duration. No trauma. No previous treatment. Washes hands regularly due to work environments (stewardess). Seldom applies Gelish to nails. Picks at nail due to distal splitting. No reported nail biting. What could the DX possibly be? What would cause the split and the red vertical ridge down the nail?

diagnosis? Patient saw many professionals in the medical field who keep say it is fungal but on appearance the fungus was distal to the nail along the nail bed, and medial lateral nail corners. Nails were brittle. Suspect years of trauma to nails causing them to thicken with slight #Onycholysis. Any further suggestions? Patient is fit and healthy but nails were yellow on presentation.

Any thoughts on what would cause this black line? Right through nail bed. Patient states has been there for about 10 years. No trauma to nail. Unchanged in as many years. Weak spot in nail, causing nail to split.