“…LP has been associated with a variety of systemic disorders such as alopecia areata, vitiligo, myasthenia gravis, active chronic hepatitis, hypertension, Sjögren syndrome, lupus erythematosus, or thyroid pathology (Alaizari, Al‐Maweri, Al‐Shamiri, Tarakji, & Shugaa‐Addin, ; Barbosa et al, ; Chung et al, ; Kiyani & Shahroz, ; Likar‐Manookin et al, ; Robledo‐Sierra et al, ) Of all the articles included, there are only four, which define part of these alterations as exclusion criteria (Mohsin et al, ; Petrou‐Amerikanou et al, ; Saini et al, ; Van Dis & Parks, ). The remaining studies, with the exception of Al‐Maweri et al () who generically defined “immunologic diseases” as exclusion criteria, do not take into account the possible presence of this type of alterations when forming the study population.…”