. 2020 Apr 10;10:6231. doi: 10.1038/s41598-020-63384-y

Table 4.

Effects of smoking on skin disease.

Detrimental	Protective
Palmoplantar pustulosis²⁰	Pemphigus vulgaris^28–33
Psoriasis^16–19	Aphthous ulcer^44–50
Hidradenitis suppurativa^21–27	Oral ulcer in Behçet’s disease^{34,35,51–54}
Systemic lupus erythematosus^37–39
Wound healing⁴⁰
Skin aging^41–43