References Studied population No. of NL Patients Gender (F/M) Gender (%) DM status cutaneous comorbidities (NOP)
DM No DM
Heite 1959 (13) NL patients 265 209/56 78.9/21.1 160 105 No information
Muller 1966 (11) NL patients 171 131/40 77/23 111 60 No information
O’Toole 1999 (14) NL patients 65 63/2 96.9/3.1 8 57 No information
Erfurt-Berge 2012 (9) NL patients 52 40/12 79.9/23.1 24 28 cutaneous sarcoidosis (3)
Erfurt-Berge 2015 (15) NL patients 100 77/23 77/23 43 57 No information
Marcoval J. 2015 (10) NL patients 35 29/6 82.8/17.1 23 12 granuloma annulare (4)
Hammer 2016 (16) DM1 patients 161 108/53 67.1/32.9 161 0 No information
Jockenhofer 2016 (8) NL patients 262 166/96 63.4/36.6 90 172 Psoriasis (6), erysipelas (6) and other local skin infections (4)
Hashemi 2019 (6) NL patients 236 200/36 84.7/15.2 138 96 No information
Erfurt-Berge 2022 (2) NL patients 98 82/16 83.7/16.3 53 45 No information
Severson 2022 (5) NL patients 328 282/46 86/14 167 131 Psoriasis (8), scleroderma (4) and morphea (3)