It is a skin infection caused by Malassezia furfur which occurs in warm and humid climate and common among young adults.
- Well defined hypopigmented small macules with fine branny scales which are not itchy.
- Many small spots may coalesce to form a large depigmented spot.
- Classical sites are front of chest, back of chest, sides of neck, upper arm and face.
- Sweating aggravates the conditions.
- Asymptomatic except cosmetic problems.
Caused by fungi like trichophyton, Epidermatophyton or Microsporium.
Done by demonstration of hyphae on examination of skin scrapings, hairs or nail clipping after dissolving in 10-20% KOH and examining under light microscope.
- Maintenance of good personal hygiene.
- Sodium Thiosulphate (20% aqueous solution) once daily for 3 weeks used locally.
- Selenium Sulphide (2.5%) apply at night and wash off in morning for 4 weeks.
- Oral ketoconazole 200 mg OD for 1 week in resistant cases.