Tattoo reactions-An epidemic on the surge: A report of 3 cases.

Tattooing has been practiced in India since ancient era. It has tremendous religious and spiritual significance. In addition, tattooing for cosmetic purposes has become quite popular in recent times. With this increasing trend, there is also an increased risk of adverse effects. Here, we have described two cases of lichenoid reaction developing to red ink in double- colored tattoos and a case of sarcoidal reaction to green tattoo.

Queratosis liquenoide / Lichenoid keratosis

La queratosis liquenoide se presenta como una lesión solitaria, en forma de una mácula o pápula de color rojo, violáceo o marrón, que aparece predominantemente en mujeres y se localiza en el tronco. Su histología es semejante a la del liquen plano. Su origen es desconocido, aunque se presume que corresponde al resultado final de un proceso inflamatorio de una lesión preexistente, principalmente léntigo solar, queratosis actínica yqueratosis seborreica.

Lichenoid keratosis occurs as a solitary lesion in form of a red, purple or brown, macule or papule which appears predominantly in women, and in the trunk. Its histology is similar to lichen plannus. Its origin is unknown, although it is presumed that it corresponds to the final result of an inflammatory process of a preexistinglesion, mainly solar lentigo, actinic keratosis and seborrheic keratosis.

Queratosis liquenoide benigna / Benign lichenoid keratosis

La queratosis liquenoide benigna es una dermatosis relativamente frecuente, con presentación clínica en determinados ocasiones, que puede llegar o lo confusión con el melanoma. Se plantea que puede ser una lesión benigna en regresión. La dermatoscopia es de gran utilidad para lo orientación diagnóstica. El diagnóstico es histopatológico, por lo cual en los casos confusos lo realización de una biopsia está indicada. Se realizo uno revisión de lo literatura sobre la clínica, histopatología y dermatoscopia de lo queratosis liquenoide benigna.

Benign lichenoid keratosis is a relatively common dermatosis which clinical presentation in some cases causes confusion with melanoma. It is suggested that it may be a regressing benign lesion. Dermascopy is very useful for diagnostic orientation. The histopathological diagnosis, thus confusing where the biopsy is indicated. A review of the literature on benign lichenoid keratosis clinical, histopathology and dermascopy pattems is exposed.

Oral lichen planus versus oral lichenoid reaction: Difficulties in the diagnosis.

Lichen planus (LP) is a mucocutaneous disease with well-established clinical and microscopic features. The oral mucosa and skin may present clinical and microscopic alterations similar to those observed in LP, called lichenoid reactions (LRs), which are triggered by systemic or topical etiological agents. The difficulties faced to establish the differential diagnosis between the two pathologies were investigated in the literature. It was observed that the etiology of LP is still under discussion, with a tendency to self-immunity, while the etiology of LRs is related to the contact with specific agents, such as metallic restorative materials, resins, and drugs, allowing the establishment of a cause-effect relationship. In this case, the disease is caused by the antigen fixation in the epithelial cells, which are destructed by the immune system. Based on these data, protocols are suggested for this differentiation. The important role played by the integration between the clinician and the oral pathologist in the diagnostic process is highlighted. The treatment of LP comprises mainly the utilization of corticosteroids and the LR is treated by removal of the causal factor. Differentiation between the two diseases allows an effective and correct therapeutic approach.