Interdigital psoriasis (psoriasis alba) is atypical and rare form of psoriasis that is often missed as it is commonly mistaken for either dermatoses or fungal infection.In this study we observed and analyzed the prevalence of psoriasis interdigital of palms and soles and brought medical awareness to dermatologists and family doctors this rare form of psoriasis. Thus, you can help to avoid mistaken diagnosis and the start of correct treatment as soon as possible.