Table 1.

Database source and retrieval strategy

Database	Retrieval strategy
PubMed	(((((((((((Thyroid(Title/Abstract)) OR (Thyroiditis(Title/Abstract))) OR (Hashimoto Thyroiditis(Title/Abstract))) OR (Graves Disease(Title/Abstract))) OR (Hyperthyroidism(Title/Abstract))) OR (Hypothyroidism(Title/Abstract))) OR (TgAb(Title/Abstract))) OR (TPOAb(Title/Abstract))) OR (TRAb(Title/Abstract))) OR (Endocrine Comorbidities(Title/Abstract))) OR (Autoimmune diseases(Title/Abstract))) AND ((psoriasis(Title/Abstract)) OR (psoriatic(Title/Abstract)))
Embase	(thyroid:ab, ti OR thyroiditis:ab, ti OR 'hashimoto thyroiditis':ab, ti OR 'graves disease':ab, ti OR hyperthyroidism:ab, ti OR hypothyroidism:ab, ti OR tgab:ab, ti OR tpoab:ab, ti OR trab:ab, ti OR 'endocrine comorbidities':ab, ti OR 'autoimmune diseases':ab, ti) AND (psoriasis:ab, ti OR psoriatic:ab, ti)
Scopus	((TITLE-ABS-KEY (thyroiditis) OR TITLE-ABS-KEY (hashimoto AND thyroiditis) OR TITLE-ABS-KEY (graves AND disease) OR TITLE-ABS-KEY (hyperthyroidism) OR TITLE-ABS-KEY (hypothyroidism) OR TITLE-ABS-KEY (tgab) OR TITLE-ABS-KEY (tpoab) OR TITLE-ABS-KEY (trab))) AND (TITLE-ABS-KEY (psoriasis) OR TITLE-ABS-KEY (psoriatic))
Cochrane	(((Psoriasis) OR psoriatic) OR Pustulosis of Palms) AND ((((((((Thyroid) OR Thyroiditis) OR Thyroiditides) OR Hashimoto Disease) OR Graves Disease) OR Hyperthyroidism) OR Hypothyroidism)). And chose literature published up to “2021/11/01”. Then chose “Trials”