الفهرس 
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Abstract
Tinea versicolor (Pityriasis versicolor , Fururaea, Tinea flora is a common non inflammatory , chronic superficial fungal infection caused by a yeast known as “Pityrosporum orbiculare Clinically pitriasis versicolor is usually asymptomatic and presents as disfiguring fawn coloured or hypopigmented scaly patches predominantly affecting the trunk and upper limbs (Chu , 1 984).
Cosmetic concern is the major reason for presentation of the patient to the physician’s office.
The geographical incidence varies with the climate , being conciderably more common in tropical and subtropical areas than in temperate and colden zones (Moora and Greer, 1984),
The predisposing factors include genetic factors, systemic corticosteroid therapy , malnutrition , immunosuppressive therapy, seborrheic dermatitis (Burke, 1961; Roberts , 1969 b; Faergemann and Fridriksson, 1979 & 1982).
Sohnle and Collins-Lech (1978) found a defect in the production of lymphokines in patients with pityriasis versicolor.
Treatment of tinea versicolor is simple but retapse is common. Wide range of topical compounds used in the treatment of tinea
versicolor including selenium suiphide , thiosuiphate , keratolylic agents, propylene glycole and imidazole derivatives Recently , oral antifungals were used in the treatment as ketoconazole and itraconazole (Hay, 1981 : Delesciuse .et al., 1986).