TY - CHAP M1 - Book, Section TI - Trachyonychia A1 - Bhargava, Shashank A1 - Tosti, Antonella A2 - Tosti, Antonella A2 - Piraccini, Bianca Maria PY - 2023 T2 - Disorders of the Hair and Nail: Diagnosis and Treatment 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. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/11/09 UR - dermatology.mhmedical.com/content.aspx?aid=1201698399 ER -