This document provides information on various dermatological conditions including: - Pityriasis versicolor, describing presentation, diagnosis via KOH mount, and treatment with selenium sulfide or ketoconazole. - Acne vulgaris, outlining exacerbating factors to avoid and medical management approaches for moderate and severe cases including topical and oral medications. Details are given on isotretinoin use and monitoring. - Rosacea, defining diagnostic criteria and stages, differential diagnosis, and treatment approaches including lifestyle modifications and topical or oral antibiotics. - Vitiligo, alopecia areata, scabies, lichen planus, and psoriasis, briefly covering presentation, diagnosis

1. DERMATOLOGY Archer’s Online USMLE Reviews www.ccsworkshop.com All Rights reserved

3. This adolescent boy complained of chronic and recurrent scaly white spots on his trunk for years.  The scaling cleared with topical selenium sulfide lotion but the pigment took 4 months to recover.

5. What do u do about Acne? Advise to pts, medical management, exacerbating factors etc

14. Rosacea may be associated with enlargement of the nose from excess tissue, a condition known as rhinophyma  includes thickening of the skin and irregular surface nodules Rx Early cases  antibiotics Late cases  surgery

17. Topical Corticosteroids

19. Vitiligo

20. Koebner Phenomenon - vitilgo

22. Scabies

23. Scabies

30. This patient has joint pains and scaly patch behind his ear. What is the most likely cause of his findings?

35. A 25 y/o man presents with the lesion shown on his lower lip. What is the treatment?

37. A healthy 20 year old female come with history of paroxysmal lip swelling. In the past , her doctor tried solumedrol and benasdryl but they never seem to make it better. She says the swelling comes and goes spontaneously. She has had negative skin prick testing

40. Genital Warts Only Pics Therapy – refer I.D Slides

41. Genital warts - The real HPV - Differentiate from Benign Lesions

42. Pearly Penile Papules - A benign Lesion at corona - do not confuse with Warts! – Reassure patients!

43. Fordyce Spots - vulva – These are Sebaceous glands - do not confuse with warts!