Dermoscopy is probably the most important noninvasive diagnostic tool for dermatologic practice, being considered the “dermatologist stethoscope.” Inflammatory processes may occur secondarily in ordinary lesions and change their usual clinical aspects. This phenomenon is seen, for example, in some melanocytic nevi (Meyerson nevus) or irritated seborrheic keratosis. Especially, this chapter presents the dermoscopic patterns and aspects of different major cutaneous inflammatory diseases that have been reported. Dermoscopy may facilitate inflammatory dermatoses recognition, differentiate them from skin tumors like basal cell carcinoma, Bowen’s disease, and amelanotic melanoma and also help in monitoring therapeutic actions, although it might sometimes give little information alone. Distinct dermoscopic aspects of cutaneous inflammatory diseases are psoriasis, pityriasis rosea, lichen planus, eczemas, urticaria, dischoid lupus, lichen sclerosus and morphea, and noninfectious granulomas.