Chronic urticaria associated with lung adenocarcinoma — a paraneoplastic manifestation: A case report and literature review

Table 4 Curth's criteria for paraneoplastic dermatoses: Adapted from Garza and Ocampo (2015)

Criteria	Main characteristic	Main findings
Majorcriteria	Concurrent appearance	Dermatosis and malignancy occur simultaneously.
	Parallel evolution	If the malignancy is treated successfully or recurs, the dermatosis follows a similar course.
Minor criteria	Uniformity	A specific malignancy is constantly associated with a specific dermatosis.
	Statistical significance	There is a statistically significant association between malignancy and dermatosis based on case-control studies.
	Rarity	Rarity in the type of skin pathology. Very frequent processes are eliminated because their high prevalence can cause them to be merely coincidental.