Robuta

https://pubmed.ncbi.nlm.nih.gov/26475537/ Beau lines, onychomadesis, and retronychia: A unifying hypothesis Beau lines, onychomadesis, and retronychia are nail dystrophies with distinctive clinical findings. Trauma has been reported as the initiating factor in each... beaulinesretronychiaunifyinghypothesis https://boris-portal.unibe.ch/entities/publication/64a2f56c-383f-45b9-9b15-8c22721dc125 "Retronychia--clinical and pathophysiological aspects". Retronychia represents proximal ingrowth of the nail that occurs when the nail embeds backwards into the proximal nail fold. It is suspected when there is a... retronychiaclinicalaspects