A group of pigmented purpuric dermatoses includes a list skin diseases characterized by multiple petechial hemorrhages, purpura, and increased pigmentation (yellow, brown, or red patchy). Schamberg disease is the most common representative this with benign, chronic recurrent course idiopathic origin. The lesions are often asymptomatic associated mild pruritus, usually occurring on lower extremi...

The Blum-Hoye [J. Stat. Phys. 19 317 (1978)] solution of the mean spherical approximation for a multicomponent multi-Yukawa hard-sphere fluid is extended to a polydisperse multi-Yukawa hard-sphere fluid. Our extension is based on the application of the orthogonal polynomial expansion method of Lado [Phys. Rev. E 54, 4411 (1996)]. Closed form analytical expressions for the structural and thermod...

BACKGROUND Pigmented purpuric dermatoses (PPD) are a spectrum of disorders characterized by a distinct purpuric rash. Although PPD can be easily diagnosed, the disease entity remains an enigma and a therapeutic challenge. OBJECTIVE The purpose of this study was to investigate the characteristics and clinical manifestations of PPD and to elucidate the relationship between assumed etiologic fac...

Pigmented purpuric dermatoses (PPD) are a group of eruptive disorders characterized by petechiae and pigmentation affecting principally the lower limbs. These disorders follow a benign and chronic course punctuated by remissions and exacerbations; the etiology is unknown. Histopathology reveals a perivascular lymphocytic infiltrate and red blood cell extravasation in the early stages and hemosi...

Aim: Lymphocytic vasculitis is a morphological term which includes clinically heterogenous diseases like connective tissue disease, infection, lichenoid diseases, drug reaction, Behçet’s disease, superficial thrombophlebitis and leukemic vasculitis. There are three forms of lymphocytic vasculitis : angiodestructive form, lichenoid lymphocytic vasculitis and lymphocytic endovasculitis. There is ...

Pigmented purpuric dermatoses (PPD) are a group of eruptive disorders characterized by petechiae and pigmentation affecting principally the lower limbs. These disorders follow a benign and chronic course punctuated by remissions and exacerbations; the etiology is unknown. Histopathology reveals a perivascular lymphocytic infiltrate and red blood cell extravasation in the early stages and hemosi...

Progressive pigmentary purpura or Schamberg's disease. Pigmented purpuric lichenoid dermatitis of Gougerot and Blum red/brown papules and plaques in men which responds to psoralen combined with ultraviolet A (PUVA) treatment. Purpura annularis telangiectodes rare, with a preponderance in young females and manifests as annular erythematous plaques and patches. Eczematoid-like purpura of Doucas a...