This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Staphyloccus can cause : \nSelect and explain. \nA. Ecthyma, B. Erytharsma, C. Tumor, D. Impetigo contagioa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Skin and soft tissue infection of S. aureus\n\nFolliculitis – Superficial infection of ostia of hair follicle.\nFaruncles (boils) – More extensive painful lesions that tends to occur in hairy moist region of body and extend from hair follicle to become a true abscess, eg. buttock.\nCarbuncle – Mostly located in lower neck and are even more severe and painful.\nAcute paronychia – MC cause is S.aureus.\nBullous impetigo – Impetigo is most frequently diagnosed bacterial infection.\nEcthyma – It is deeper form of impetigo caused by Staph or Strep.\nCellulitis\nHiradenitis suppurativa - Recurrent follicular infections in region such as axilla.\nSycosis barbae is chronic folliculitis of beard hair follicle.\n\nRemember :\n\nS. aureus is MC cause of surgical wound infection.\n\nHarrison 17/e, p 873\n\nNon - bullous impetigo, cellulitis and erysipelas is caused by Strep. pyogenes more commonly than S.aureus.\nEcthyma gangreosum is caused by Ps. aeruginosa.\nErythma migrans is caused by Borrelia burgordeferi (Tick transmission).\nErythrasma is caused by corynebacterium minutissimus.\nImpetigo contagiosa is usually caused by streptococci or mixed infections. – Most cases of impetigo is caused by S.aureus.', 'role': 'assistant'}]