18 year old male, bilateral thumb nail deformity with no tra | Figure 1

18 year old male, bilateral thumb nail deformity with no trauma. Duration 3 years. No skin (sculp, elbows, shin, knee) involvement. No other nail deformity. Nail clipping sent for PAS stain and MC&S. Suspected #Psoriasis of #Nails or #Lichen planus of #Nails. Ddx #Onychomycosis. With #Paronychia of surrounding skin. Any suggested diagnosis and treatment plan?

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