“…However, some other complications have been reported in the literature, most of them due to malpractice or without a causal relationship between the ozone administration and the adverse event ( Marchetti and La Monaca, 2000 ; Corea et al, 2004 ; Lo Giudice et al, 2004 ; Ginanneschi et al, 2006 ; Gazzeri et al, 2007 ; Bo et al, 2009 ; Seyman et al, 2012 ; Vilas-Rolan et al, 2012 ; Fort et al, 2014 ; Menéndez et al, 2014 ; Mustafa et al, 2015 ; Vanni et al, 2015 ; Cano et al, 2016 ; Salvatore et al, 2016 ; Balan et al, 2017 ; Hüseyin et al, 2017 ; Wen-Juan et al, 2017 ; Beyaz et al, 2018 ; Yang et al, 2018 ; He et al, 2019 ). Most of them disappeared in a few days not needing specific medical treatment.…”