IntroductionPorokeratosis (PK) is an epidermal disorder of keratinization caused by mevalonate pathway abnormalities. 1 Different clinical subtypes of PK are described. The common types include disseminated Superficial Actinic Porokeratosis, porokeratosis of Mibelli, and Linear porokeratosis. Disseminated superficial porokeratosis, eruptive disseminated porokeratosis, porokeratosis palmaris et plantaris disseminate, punctate porokeratosis, porokeratosis ptychotropica, penoscrotal porokeratosis, and Follicular porokeratosis (FPK) are the less common types of PK. 2 The clinical appearance, predilection site, and symptoms vary in various forms of PK.2 Cornoid lamella is the common histopathologic feature in all types of PK. 1, 2Follicular porokeratosis is a rare form of PK, characterized by the cornoid lamella filling the hair follicle infundibulum.3 Follicular porokeratosis may be concomitant with other PK forms 4 or occurs as pure FPK.5 Although most of the FPK cases are localized lesions3, 6-9, more diffuse distribution of lesions is reported in a few patients. 5, 10 The scalp is not a common site for FPK 3, 5, 11, and according to available sources, only one of the scalp FPK cases caused alopecia.5 Although diabetes mellitus type 2 accompanied some cases of porokeratosis 12, 13, we could not find any case of FPK associated with diabetes mellitus.Herein, we report a case of extensive FPK with spicules that caused alopecia of the scalp hair in a diabetic woman.

COVID-19 infection and Leser-Trelat sign: is there an association?Farhad Handjaniab, Roya Radanfarab, Mozhdeh Sepaskhahab*, Niloofar Dehdari EbrahimicaMolecular Dermatology Research Center, Shiraz University of Medical Sciences, Shiraz, IranbDepartment of Dermatology, Shiraz University of Medical Sciences, Shiraz, IrancStudent Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran*corresponding author

Various conditions, including infections, can cause telogen effluvium (TE). One of them is coronavirus disease 2019 where hair loss usually begins between two and twelve weeks after the illness. Here, we present the case of a 17-year-old girl with having a history of such attacks since childhood.

Radiation Recall Phenomenon (RRP) is an inflammatory process in the site of irradiation, induced by physical and medical agents. Few cases of RRP in the skin and lung have been reported after COVID-19 vaccination. Here, we report radiation recall dermatitis after both doses of inactivated SARS-CoV-2 vaccine (Sinopharm, China).