“…The main dermatologic findings are summarized in Tables I and II. As in our patient, nonperiorificial keratotic lesions on different parts of the extremities (other than palms and soles) and in the intertriginous folds have frequently been mentioned. Such lesions appeared as linear, streaklike hyperkeratoses 8,10,14,16,[27][28][29] and follicular keratosis-like keratotic papules. 2,8,10,[13][14][15]22,28,30 In the current case and in two monozygotic twins, 18 scanning electron microscopy of hair revealed changes such as twisting of hair shafts, trichorrhexis nodosa, transverse fractures, and disturbance of the cuticle cell pattern.…”