Pityriasis versicolor Flashcards
What is pityriasis versicolor?
A common superficial fungal infection caused by the malassezia species
What are the features of pityriasis versicolor?
Itching
Rash that worsens with sun exposure
Hypo or hyperpigmentation
Well demarcated, round or oval scaly patches
Most commonly affects the trunk
What are the risk factors for pityriasis versicolor?
Hot and humid climates
Excessive sweating
Oily skin
Immunocompromised states
Common in teenagers and young adults
Cushing’s
Malnutrition
What investigations can confirm the diagnosis of pityriasis versicolor?
Wood’s lamp examination - the patches of pityriasis versicolor will fluoresce a yellow-green colour
Microscopy of skin scraping - ‘spaghetti and meatballs’ appearance
What is the first line management of pityriasis versicolor?
Topical antifungals
- Ketoconazole
- Selenium sulfide shampoos
Sunprotection
- Minimises contrast between affected and unaffected skin
What is the second line management of pityriasis versicolor?
Oral antifungals - fluconazole or itraconazole
