RT Book, Section A1 Bhargava, Shashank A1 Tosti, Antonella A2 Tosti, Antonella A2 Piraccini, Bianca Maria SR Print(0) ID 1201698399 T1 Trachyonychia T2 Disorders of the Hair and Nail: Diagnosis and Treatment YR 2023 FD 2023 PB McGraw Hill PP New York, NY SN 9781260462470 LK dermatology.mhmedical.com/content.aspx?aid=1201698399 RD 2023/11/28 AB SUMMARYTwenty-nail dystrophy is commonly used synonymously with trachyonychia.There are two varieties of trachyonychia: opaque and shiny.It is commonly associated with alopecia areata; it can be a symptom of nail lichen planus, psoriasis, or eczema.