1) Most common organism causing tinea- Trichophyton rubrum
2) Most common organism causing tinea capitis- Trichophyton violaceum
3) Most common cranial nerve involved in Hansens- facial
4) Most common nerve taken for nerve biopsy in Hansens- radial cutaneous (upper limb), sural (lower limb)5
) Most common cause of mononeuritis multiplex - Hansen (India), DM (world)
6) Most common cause of ENL- LL> BL7) Most common cause of a negative Slit skin smear in Hansen- neural leprosy
8) Cause of Type 1 reaction- BB> BT> BL
9) DOC for type 1 and type 2 reaction- steroids
10) DOC for chronic, recurrent ENL- thalidomide
11) Most common side effect of dapsone- hemolytic anemia
12) Most common side effect of clofazimine- pigmentation
13) Most common cause of inverted saucer lesion- borderline leprosy
14) Most common cause of leonine facies- LL
15) Earliest sensation lost- temperature
16) Most common Hansen- Borderline Tuberculoid
17) Commonest site for Fixed drug eruption (FDE)- lips
18) DOC for tinea - terbinafine
19) DOC for tinea capitis- griseofulvin
20) Most common type of onychomycosis – Distal and lateral onychomycosis (In HIV, the most common type is proximal subungual onychomycosis and superficial whiteonychomycosis)
21) DOC for sporotrichosis- itraconazole> potassium iodide
22) Most common cause of reactive arthritis- Chlamydia> Shigella
23) Most common Psoriatic arthritis- oligoarticular, asymmetric.
24) DOC for psoriatic arthritis- Methotrexate
25) DOC for arthritis mutilans- etanercept
26) DOC for guttate ps- antibiotics
27) DOC for erythrodermic psoriasis- Methotrexate
28) DOC for pustular psoarisis- Acitretin
29) DOC for early mycosis fungoides- Electron beam therapy > Phototherapy
30) Most common type of pemphigus- pemphigus vulgaris
31) Rarest type of pemphigus- pemphigus vegetans
32) DOC for Dermatiis herpetiformis- Dapsone
33) Most classical joint involved in Psoriatic Arthritis- DIP
34) Most common cause of non bullous impetigo- strepto> staph
35) Most common cause of bullous impetigo- staph
36) Most common underlying disease in kaposis varicelliform eruption - atopic dermatitis
37) Most common site of adult atopic dermatitis- ante cubital fossa
38) Most common site of pediatric atopic dermatitis- cheek
39) Most common cause of cumulative Irritant contact dermatitis- detergents, Wet work
40) Most commonest cause of Allergic contact dermatitis-nickel
41) Most common cause of air borne contact dermatitis- parthenium
42) DOC for air borne contact dermatitis - azathioprine
43) Most common layer of epidermis for lamellar body presence- granular layer
44) Most common layer for synthesis of vitamin D ( Also same answer for presence of langerhans cells)- spinous layer
45) Thickest layer of epidermis- corneum
46) Thinnest layer of epidermis- granular
47) Most common cause of acute paronychia- staph
48) Most common cause of chronic paronychia-candida
49) Most common syphilis transmitted by sexual route- primary
50) Most common syphilis transmitted from infected mother- secondary
51) Most infectious lesion in syphilis- mucous patches
52) Most sensitive test in syphilis- Enzyme Immunoassay> TPPA > FTA-abs
53) Most specific test in syphilis- TPPA> TPHA
54) DOC for chancroid- azithro
55) DOC for LGV and donovanosis- doxy
56) DOC for syphilis in pregnancy- penicillin
57) DOC for urethral discharge and cervical discharge (syndromic management)- azithro+ cefixime
58) DOC for vaginal disch (syndromic management)- fluconazole + secnidazole/metro/tinidazole
59) DOC for bubo (syndromic management)- azithro+ doxy
60) DOC for genital ulcer (syndromic management)- if vesicle - acyclovir, if not azithro+ benzathine penicillin
61) DOC for neurosyphilis- crystalline aqueous penicillin
62) DOC for penicillin allergy in syphilis- doxy
63) DOC for penicillin allergy in syphilis in pregnancy- desensitization
64) DOC for penicillin allergy in neurosyphilis- desensitization
65) DOC for Impetigo herpetiformis- steroids
66) Investigation of choice in primary syphilis- dark ground illumination
67) Most common cutaneous TB- lupus vulgaris (In children, it is Scrofuloderma)
68) Test of choice for lupus vulgaris- biopsy
69) Most common organism for p versicolor now in India- Malassezia globosa
70) Most common internal organ inv in leprosy- testis
71) Organ never inv in leprosy- uterus> CNS72) Sensation never lost in hansens- propioception, vibration
73) DOC for Post herpetic neuralgia- Gabapentin
74) Most characteristic of LP on histopathology- basal cell degeneration
75) Best time to read patch test- 4 days
76) Commonest drug for FDE- sulphonamides
77) Commonest cause of Erythema Multiforme- HSV
78) Commonest cause of SJS/TEN- drugs (NSAIDS, anti epileptic, sulphonamides, penicillin)
79) DOC for scabies- 5% permethrin
80) DOC for scabies in pregnancy- 5% permethrin
81) DOC for nodular scabies- permethrin+ steroids
82) DOC for nerve abscess- I and D
83) DOC for nodulocystic acne- oral isotretinoin
84) DOC for hormonal acne- OCP with drosperinone+ estrogens
85) DOC for pediculosis corporis- disinfection of clothes
86) DOC for head louse- 1% permethrin
87) DOC for norwegian scabies- ivermectin
88) Most common shape of burrow in scabies- S-shaped
89) Most common and earliest manifestation of tuberous sclerosis- ash leaf macule> adenoma sebaceum
90) Earliest manifestation of congenital syphilis- snuffles
91) Best blood test for congenital syphilis- FTA-ABS IgM
92) Most common site for morphoea- limbs
93) Most common cause for salt and pepper skin pigmentation- scleroderma
94) Most common cause of acanthosis nigricans- obesity
95) Most severe form of psoriasis- Von zumbusch
96) Most common melanoma- superficial spreading melanoma
97) Poorest prognosis in melanoma- nodular
98) Most common type of BCC- noduloulcerative
99) Most common cause of hypopigmented, scaly patches on cheek of children- Pityriasis alba
100) Most common cause of hypopigmented, nonscaly, atrophic patches on cheek of endemic area children- indeterminate hansens
101) Investigation of choice for neurosyphilis- CSF-VDRL
102) Most common type of oral LP- reticulate / white lacy pattern
103) DOC for localised alopecia areata- intralesional steroids
104) Most effective drug in alopecia areata- contact sensitizers
105) commonest autoimmune association in vitiligo- thyroid
106) Commonest agent for leucoderma- paratertiary butyl phenol (PTBP)
107) Commonest agent for hair dye allergic contact dermatitis- paraphenylene diamine (PPD)
108) Commonest agent for footwear allergic contact dermatitis- Mercaptobenzothiazole (MBT)
109) Investigation of choice for Air borne contact dermatitis- photo patch test
110) Commonest extra genital site for primary chancre- lips
111) Commonest cause of recurrent blisters on genitals (healing with hyperpigmentation- FDE) ( if not then herpes genitalis)
112) Commonest vitiligo- Vitiligo vulgaris
113) Most common cause of erythema nodosum- Strepococcus.
114) Most common cause of patchy alopecia- Alopecia areata
115) DOC for rosacea- Metronidazole (topical), Doxy (Oral)
116) Commonest site for primary syphilis chancre- Coronal sulcus
117) First test to become positive in primary syphilis- FTA-Abs
118) Characteristic nail change in LP- Pterygium
119) Commonest cause of apple jelly nodules- Lupus vulgaris
120) Commonest cause of hypopigmented, minimally scaly macules and patches on chest and back of young adults- P. versicolor
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