Nail dystrophy - Clavus Dystrophyhttps://en.wikipedia.org/wiki/Nail_disease
Clavus Dystrophy (Nail dystrophy) morbus est vel unguis deformitas propter ignotam inflammationem. In circiter dimidium casus unguis suspecti fungus infectio non est actu fungal. Solus quidam dystrophy clavus erat.

Dystrophy unguis saepe misdiagnosis sicut onychomycosis et curatur. Ante initium antifungali curationis provisor sanitatis infectio fungalam confirmare debet. Administratio curationis personarum sine contagione supervacua est cura sanitatis et causarum partium supervacuum est.

Curatio
Iniectio intralesionalis corticosteroidis tentari potuit dystrophy clavum tractare.

Curatio OTC Medicamenta
Fugiat actiones quae unguibus laedere possunt, ut pediludium vel hiking. Curatio antifungal inefficax est, quia onychodystrophy non causatur ex contagione fungal.

☆ In anno 2022 Stiftung Warentest ex Germania provenit, satisfactio consumptoria cum ModelDerm paulo minus fuit quam cum consultationibus telemedicinis solutis.
  • Median nail dystrophy Non causatur contagione fungal.
  • Clavus Dystrophy (Nail dystrophy) plures digitos involventes.
References Trachyonychia and Twenty-Nail Dystrophy: A Comprehensive Review and Discussion of Diagnostic Accuracy 27843915 
NIH
Trachyonychia, seu twenty-nail dystrophy , significat tenues, fragiles clavos, cum multis iugis longitudinaliter decurrentibus. Aliquando, twenty-nail dystrophy mendose describitur aliae condiciones quae omnes viginti clavos afficiunt.
The term trachyonychia, also known as twenty-nail dystrophy, is used to describe thin, brittle nails with excessive longitudinal ridging. The term twenty-nail dystrophy has been incorrectly applied to other conditions that can affect all twenty nails.
 Median nail dystrophy - Case reports 33318093 
NIH
Vir XXXIV annos natus ad medicum regularem suum profectus est, quod massas sine dolore in utroque suo ailntinis per XX annos habuit. Non recordatus est unguis laedere aut tabes fieri. Utroque pollice sulcus directus per medium, abiete instar abiegnae, lineis transversis erat.
A 34-year-old man presented to his primary care physician with a 20-year history of painless bilateral thumbnail lesions. The patient had no history of nail trauma or infection. Both thumbs had a central linear depression in a fir tree pattern, surrounded by parallel transverse ridges.
 Nail cosmetics: What a dermatologist should know! 37317711
Cum maxime clavi medicamina fere tuta sunt, adhuc possunt quaestiones ducere sicut motus allergicos, irritationes, infectiones, et problemata mechanica. Notatu dignum est multos clavorum rationes medicamine permoveri a pulchris, qui clavi anatomiae et functionis cognitione carere possunt, potius quam dermatologi. Accedit hygiene exercitationes in salonibus unguis et adytis pulchritudinis variantur, quae in acutis quaestionibus sicut paronychia et unguis dystrophy ob iniuriam matricis provenire possunt.
While most nail cosmetics are generally safe, they can still lead to issues such as allergic reactions, irritations, infections, and mechanical problems. It's worth noting that many of nail cosmetic procedures are carried out by beauticians who may lack proper knowledge of nail anatomy and function, rather than dermatologists. Additionally, the hygiene practices in nail salons and beauty parlors vary, which can result in acute problems like paronychia and nail dystrophy due to matrix injury.