Ashy dermatosis (AD), lichen planus pigmentosus (LPP), erythema dyschromicum perstans (EDP), and idiopathic eruptive macular pigmentation are several acquired macular hyperpigmentation disorders of uncertain etiology described in literature. Most of the published studies on these disorders are not exactly comparable, as there are no clear definitions and different regions in the world describe similar conditions under different names. A consensus on the terminology of various morphologies of acquired macular pigmentation of uncertain etiology was a long-felt need.
View Article and Find Full Text PDFIntroduction: Progressive macular hypomelanosis (PMH), a condition of uncertain etiology, is characterized by asymptomatic hypopigmented macules predominantly located on the trunk. To date, there are no reports from South-East Asia concerning this condition. We sought to record the clinical features of PMH in Asian patients, identify etiologic factors, and study the structural and ultrastructural features of melanocytes in this disorder.
View Article and Find Full Text PDFAustralas J Dermatol
November 2005
We describe an Asian child with juvenile elastoma who presented to us at 9 years of age with flesh-coloured nodules on his thigh. Histologically, H&E sections were normal, but elastin stains showed collections of increased and thickened elastic fibres consistent with juvenile elastoma. Radiological examination did not demonstrate osteopoikilosis.
View Article and Find Full Text PDFInt J Lepr Other Mycobact Dis
September 2004
Deep pain upon percussion of lesions over bone in tuberculoid leprosy, in spite of superficial sensory impairment, has been described as the "Tap Sign" (TS). This study was conducted to identify possible causes for this phenomenon and to determine the sensitivity and specificity of this sign in leprosy patients with lesions overlying bone. In 37/53 patients with lesions over bone, the sensitivity of the TS was 66.
View Article and Find Full Text PDFInt J Dermatol
December 2002
Background: Many methods have been employed, with variable success, in the treatment of cutaneous myiasis caused by Chrysomya species.
Aims: Experiment 1: to assess the larvicidal effect of mineral turpentine (MT) and the main ingredient of MT, low aromatic white spirits (LAWS), on Chrysomya megacephala larvae in vitro. Experiment 2: to assess the larvicidal effects of aqueous extracts of winged senna (Cassia alata), and aqueous extracts, ethanolic extracts and essential oil of betel leaf (Piper betle).