Introduction Inverse psoriasis is a rare type of psoriasis,especially in children, characterized by specific pathogenic sites.Unlike vulgaris psoriasis, inverse psoriasis usually affects flexural sites such as the groin, axillae and externalia.The relatively low morbidity and confusing pathogenic sites make a correct diagnosis of inverse psoriasis difficult for physicians.Here, we describe the case of a 9-year-old boy who presented with inverse psoriasis.Drawing on our previous clinical experience, we made an accurate diagnosis, and the subsequent treatment achieved a significant effect.Similar cases in the literature regarding various aspects of inverse psoriasis will also be described.