Vinod Sujatha, Singh Gurcharan, Dash K, Grover Sanjiv
Department of Dermatology Command Hospital, Air Force, Bangalore-560 007, India.
Indian J Dermatol Venereol Leprol. 2002 Nov-Dec;68(6):338-40.
Even though pityriasis alba is commonly encountered in dermatological practice, there is paucity of Indian studies on the subject. A clinico epidermiological study was carried out in 200 patients attending the skin department of Command Hospital, Air Force, Bangalore. Atopic background was detected in 85.5% of cases. Bacterial and fungal culture studies failed to reveal any infective aetiology. Helmenthiasis and iron deficiency anaemia were detected in 15.5% and 16.5% of patients respectively. However no other nutritional deficiency was observed in the present study. Majority (84.5%) of patients had lesions of less than 6 months duration at the time of presentation. Face was involved in 91% of patients and generalized pityriasis alba was observed in 3 patients, all of them being infants. Pigmenting pityriasis alba was observed in 7 patients. Hyperkeratosis, parokeratosis, acanthosis, spongiosis and perivascular infiltration were the consistent histological features of pityriasis alba.
尽管白色糠疹在皮肤科临床实践中很常见，但印度关于该主题的研究却很少。对班加罗尔空军司令部医院皮肤科就诊的200例患者进行了一项临床流行病学研究。85.5%的病例检测到特应性背景。细菌和真菌培养研究未发现任何感染性病因。分别在15.5%和16.5%的患者中检测到蠕虫病和缺铁性贫血。然而，在本研究中未观察到其他营养缺乏情况。大多数（84.5%）患者在就诊时皮损持续时间不到6个月。91%的患者面部受累，3例患者出现泛发性白色糠疹，均为婴儿。7例患者观察到色素沉着性白色糠疹。角化过度、不全角化、棘层肥厚、海绵形成和血管周围浸润是白色糠疹一致的组织学特征。
