Dermatology quiz


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Dermatology quiz

  1. 1. Sajid Nazir 2009
  2. 2. How would you manage it?
  3. 3. almost never metastasizes but it may kill by local invasion commonest skin cancer incidence is related to sunlight exposure 75% occur in the head and neck Initial small pearly white lesion, telengectasia, central ulceration and rolled edges, bleed-ulcerate-heal again Treatment is excision by specialist, send for histology
  4. 4. How would you manage and what treatment would you avoid?
  5. 5. Flushing, papules and pustules - forehead, bridge of the nose and cheeks Unknown aetiology Precipitated by topical steroids, sunlight, alcohol, hot drinks topical metronidazole topical azelaic acid oral tetracycline
  6. 6. How would you manage it?
  7. 7. Small white yellow papules that occur on face and neck Common in newborns and are transient Believed to originate from maldeveloped sweat glands Often rupture and skin and no treatment is required
  8. 8. What features support diagnosis? What would you do with this patient?
  9. 9. Asymmetrical, irregular border and colour, increasing size Urgent referral Prognosis related to thickness (Breslow)
  10. 10. How would you manage?
  11. 11. Usually appear in first 2 decades No treatment required May be excised if malignant change suspected or for cosmetic reasons
  12. 12. Characteristically: rapidly expanding painless, ulcerated nodule, rolled indurated margin. Commonly ulcerate and bleed Potential to metastasize Must refer for biopsy/excision
  13. 13. Slowly expanding pink, scaly plaque that has a sharply defined border Risk of invasive SCC (3-5%) Histology required Management options include watchful waiting, topical fluorouracil, cryotherapy, curettage, excision, laser
  14. 14. What are the erythematous areas called? Name 2 causes
  15. 15. Target Lesions Causes: barbiturates, aspirin, sulphonamides, herpes simplex , TB, mycoplasma, typhoid, pregnancy, vit c deficiency, collagen vascular disease, IBD Treat causes Symptomatic Rx e.g. Antihistamines Heals in 3 weeks
  16. 16. How would you treat them?
  17. 17. hyperpigmented or scaly lesions, usually brown with a scaly base marked thickening of the keratin layer Can progress to SCC Topical diclofenac 3%, 5-fluorouracil, topical retinoids physical treatment e.g. cryotherapy, curettage, local excision
  18. 18. Varicella zoster virus Unilateral aciclovir administration of 800 mg five times per day for 7 days Can result in post-herpetic neuralgia
  19. 19. How would you treat it?
  20. 20. Spares face, hands and feet topical antifungal therapy or with steroid Oral terbenfaine/itraconazole
  21. 21. What is this called and what causes it?
  22. 22. Erythema Ab Igne Reddened skin due to longterm infrared radiation exposure Common in elderly who sit in front of heater Or use of a hot water bottle as in this case Laptops may cause it!! Mild cases resolves spontaneously if you remove source, others are permanent
  23. 23. What is this and what diseases may it be associated with?
  24. 24. Erythema nodosum is a reactive process of unknown pathogenesis Causes: streptococcal infection, sarcoidosis. Pregnancy, the oral contraceptive pill, inflammatory bowel disease, tuberculosis In 50% of cases the cause is not identified. Must to bloods and CXR to investigate
  25. 25. What are these patches?
  26. 26. Screen for other autoimmune disorders eg thyroid No treatment required
  27. 27. What are these patches? They were on the patients back
  28. 28. yeast infection Usually noted after a holiday when normal skin tans Mild or localised pityriasis versicolor may clear with repeated applications of a topical imidazole cream oral imidazole (ketoconazole, fluconazole or itraconazole) for extensive infections
  29. 29. THANK YOU!