Actinic reticuloid is a rare, chronic photosensitivity dermatosis with clinical and histologic femtures resembling a cutaneous T cell lymphoma. Phototesting in these patients typically reveals extreme sensitivity to UVB, to UVA, and sometimes to visible light. has site of lymphomatoid histologic appearance, actinic reticuloid is now regarded as a histologic arant of chronic actinic dermatitis, which is the spectriam of several photosensitivity dermatosis, delet to its benign course and transition to or from other photosensitivity dermatosis. We present a case of actinic veticuloid in 58-year-old male, who has severely edematous infiltrated lichenified erytherratous patches on sun-exposed skin, lynptmatoid histologic features with selective T cell infiltrat,ion, and selective photosensitivity to UV. (Kor J Dermatol 1995;33(3): 534-539)