The study concludes that Twenty-nail dystrophy is more common in boys among children and in women among adults, with varying response to treatment.
April 2016 in “Journal of the American Academy of Dermatology” Treatment improved some symptoms but not all.
44 citations,
May 1980 in “Archives of Dermatology” "20-nail dystrophy" can have multiple causes.
January 2015 in “Dermatology online journal” A man with total hair loss also developed a rare nail condition, likely due to autoimmune issues.
7 citations,
September 2011 in “International Journal of Dermatology” The Korean study found that twenty-nail dystrophy mainly affects adults, more often women, and has five distinct types with different clinical progressions.