No abstract available.
Pityriasis Lichenoides* ; Pityriasis*

No abstract available.
Pityriasis Lichenoides* ; Pityriasis*

BACKGROUND: Pityriasis rosea is an acute inflammatory dermatosis with an unproven etiology. The typical clinical feature consists of an initial, single herald patch followed by development of smaller, disseminated, papulosquamous, ovoid macules. However, an unusual papular type of pityriasis rosea is relatively common in children and it shows similar clinical characteristics to pityriasis lichenoides. OBJECTIVES: Our purpose was to observe the clinical and histologic features of pityriasis rosea and pityriasis lichenoides, and differentiate two diseases in children. METHODS: Sixteen children with pityriasis rosea and nineteen children with pityriasis lichenoides were investigated clinically and histologically. RESULTS: 1. Clinically, pityriasis rosea may be differentiated from pityriasis lichenoides by the existence of herald patch, short duration, the uniformity of size and shape, and residual pigmentation. 2. Focal parakeratosis, intraepidermal vesicle and papillary derma edema are more common in pityriasis rosea. In contrast, deep dermal infiltration, dyskeratosis, epidermal necrosis and confluent parakeratosis are more common in pityriasis lichenoides. 3. Comparing to the plaque type, a papular type of pityriasis rosea shows more involvement in the extremities with longer duration. Histologically, parakeratosis and papillary dermal edema are less and spongiosis is more commonly observed in papular type. CONCLUSIONS: Pityriasis rosea in children often shows papules especially on the extremities, similar to that of pityriasis lichenoides. However, from the results in this study, we believe that two diseases can be differentiated if both clinical and histologic findings are carefully studied.
Child* ; Edema ; Extremities ; Humans ; Necrosis ; Parakeratosis ; Pigmentation ; Pityriasis Lichenoides* ; Pityriasis Rosea* ; Pityriasis* ; Skin Diseases

No abstract available.
Leuprolide* ; Pityriasis Rosea* ; Pityriasis*

No abstract available.
Child* ; Humans ; Pityriasis Lichenoides* ; Pityriasis*

No abstract available.
Methotrexate* ; Pityriasis Lichenoides* ; Pityriasis* ; Prednisolone*

No abstract available.
Pityriasis Rubra Pilaris* ; Pityriasis*

Pityriasis lichenoides chronica is characterized by unknown etiology, chronicity and by being essentially asymptomatic and refractory to therapy. Nine patients with pityriasis lichenoides chronica were treated with orally administrated 8-Methoxypsoralen and UVA irradiation(PUVA Therapy). After S-45 PUVA treatments, lesions were completely cleared.
Humans ; Methoxsalen ; Pityriasis Lichenoides* ; Pityriasis* ; PUVA Therapy*

We report herein a case of pityriasis lichenoides et variloiformis acuta in a 48- year-old man, who has wide spread erythematous macule, papule, vesicle, hemorrhagic vesicle and reddish-brown crust on the neck, trunk, axillae and both extremities. He was treated successfully with tetracycline 2. 0 gm a day for 4 weeks.
Axilla ; Extremities ; Neck ; Pityriasis Lichenoides* ; Pityriasis* ; Tetracycline

Acantholytic dyskeratosis is seen in Darier's disease, transient acantholytic dermatosis and warty dyskeratoma. It is also occasionally observed incidental histological finding in pityriasis rosea, pityriasis rubra pilaris and is occasionally found in linear epidermal nevus. A 10-month-old boy presented linear hyperkeratotic plaques on the right sole and the left hand along with erythematous scaly papules on the posterior neck, the left axilla and the face. Histological findings showed acantholytic dyskeratosis with common histopathological findings of epidermal nevus. Acantholytic dyskeratosis is an occasional finding in linear epidermal nevus, but has been rarely reported in an infant(5 cases reported in 20 years). We report a case of linear epidermal nevus with acantholytic dyskeratosis in an infant.
Axilla ; Darier Disease* ; Hand ; Humans ; Infant ; Male ; Neck ; Nevus ; Pityriasis Rosea ; Pityriasis Rubra Pilaris ; Skin Diseases