<prompt> Spaghetti and meat ball appearance is seen with-Pityriasis roseaPityriasis versicolorAcne rosaceaLichen planus  <response>: PITYRIASIS VERSICOLOR:- Tinea versicolor. Macules with fine scaling. Causative organism: dimorphic fungi.genus Malassezia globosa and M.furfur. Clinical features:- Hypohyperpigmented macules with fine ,branny scales. The lesions may coalesce to involve large areas,forming map like structures. Scraping the surface will accentuate the scaling,known as scratch sign or coup d;ongle sign or Besnier sign. Sites involved-upper trunk mainly. Also affect face and flexural areas. Investigation:- Wood;s lamp examination - golden yellow flourescence. Scraping and direct microscopy after adding KOH will demonstrate presence of both yeast and hyphal forms.This appearance is called as spaghetti and meatball appearance. Reference: IADVL textbook of dermatology, vishalakshi Vishwanath pg no.52 