Morphea developing at the site of healed herpes zoster.

Wolf's isotopic response describes the occurrence of a new, unrelated disease that appears at the same location as a previously healed skin disease, and the most common primary skin disease of this phenomenon is herpes zoster. Several cutaneous lesions have been described to occur at the site of healed herpes zoster, and granulomatous dermatitis and granuloma annulare have been reported to be the most common second diseases. The pathogenesis of the isotopic response is still unclear. Morphea can develop at the site of regressed herpes zoster and a few such cases have been reported. We present here an additional case of morphea that developed at the site of previously healed herpes zoster, and we review the relevant literature.

A case of palmar lichen nitidus presenting as a clinical feature of pompholyx.

Lichen nitidus (LN) is an uncommon chronic eruption of an unknown cause, and it is characterized by tiny, discrete, flesh-colored papules. The sites of predilection are the genitalia, trunk and extremities. Unilateral palmar involvement with pruritus is infrequent. We report here on a case of LN confined to the right palm, and the patient presented with multiple, pruritic, erythematous to flesh-colored, tiny papules and vesicles that mimicked pompholyx. The histopathological examination of a skin biopsy specimen showed the typical findings of LN.

A case of erythrodermic dermatomyositis associated with gastric cancer.

Erythroderma is an unusual cutaneous finding associated with dermatomyositis. There are only five cases of erythrodermic dermatomyositis reported in the English literature. We treated a case of erythrodermic dermatomyositis associated with a Bormann type 1 gastric cancer. The patient had a generalized, erythematous scaly eruption consistent with erythroderma and Gottron's papules as well as a heliotrope rash; these are the hallmark skin manifestations of dermatomyositis.

Pulsed dye laser therapy for pediatric warts.

Viral wart infections constitute one of the most common pediatric skin diseases, and various modalities have been used to manage them. Although pulsed dye laser therapy is known to be a safe and efficacious modality, the reported cure rates for this method have varied, and no studies have reported treatment of pediatric patients alone. This prospective, nonblinded, nonrandomized study was performed to evaluate the efficacy and safety of pulsed dye laser therapy for pediatric warts. We found that this method is safe, relatively effective, and worth considering as an additional therapeutic option for viral warts in children, although not as a first-line therapy.

Eruptive pseudoangiomatosis.

Eruptive pseudoangiomatosis (EPA) is a rare, self-limiting exanthem, which is known to occur primarily in children. It is characterized by an eruption of distinctive erythematous angioma-like papules often surrounded by a pale halo, with histological findings distinct from that of true angiomas. We describe three women with angioma-like papules. The biopsy specimens from them showed a unique histological appearance consisting of dilated dermal blood vessels with plump endothelial cell and perivascular lymphocytes. On the basis of the clinical and histological findings, we present the adult cases of eruptive pseudoangiomatosis and their etiology.

Calcinosis cutis of the fingertip associated with Raynaud's phenomenon.

Cutaneous calcification may be divided into four major categories: (i) dystrophic; (ii) metastatic; (iii) idiopathic; and (iv) iatrogenic. Dystrophic calcification is the most common type of calcinosis cutis and is associated with a variety of diseases. It most notably occurs in connective tissue diseases. Diffuse and limited cutaneous systemic sclerosis is an example of connective tissue diseases that frequently show calcinosis. We experienced a case of fingertip calcinosis cutis associated with Raynaud's phenomenon. The patient had no previous trauma, skin lesion or systemic connective tissue disease. We propose that calcinosis cutis of the fingertip may result from chronic ischemic injury caused by Raynaud's phenomenon.

Plasma cell cheilitis treated with intralesional injection of corticosteroids.

Plasma cell cheilitis is an idiopathic, benign, inflammatory condition characterized by a dense band-like infiltrate of plasma cells in the oral mucosa. In addition to the lips, the disease can affect the penis, vulva, buccal mucosa, palate, gingiva, tongue, epiglottis, and larynx. Some authors have shown the effectiveness of topical or intralesional corticosteroids; however, there have been many reports describing poor therapeutic responses to topical steroids. We describe three patients with plasma cell cheilitis whose clinical condition responded rapidly to the intralesional injection of corticosteroids.