Max. Joseph&;s space is a histopatho-logical feature of -
Lichen planus in histopathology shows thickened granular layer , saw toothing of rete ridges , basal cell degeneration ( leading to Max Joseph s spaces and colloid/ Civatte body formation) and a band like upper dermal infiltrate of lymphocytes. IADVL TEXTBOOK OF DERMATOLOGY PAGE 1070
Psoriasis vulgaris
Lichen planus
Pityriasis rosea
Parapsoriasis
Papulosquamous disorders