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Dermatology

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Dermatology

Correct Answer - A
Ans. is 'a' i.e., N. gonococci
Information in this question are ?
1. Gram negative diplococci.
2. Growth on modified Thayer-martin media.
o Neisseria gonorrhoeae is a gram negative diplococci and Thayermartin medium is the selective medium for gonococci.
Lab diagnosis of gonorrhea
Urethral discharge is the most important specimen.
Transport media
1. La It processing is to occur within 6 hrs ---> Stuart medium or A mies medium.
2. If processing is to occur > 6 hrs —> JEMBEC or Gono - Pak
system (media with self - contained CO2 -generating system).

Cluture media
1. In acute cases --> Chocolate agar or Muller - Hinton agar.
2. In chronic cases ---> Selective medium - Thayer martin medium.
Normally the diagnosis of gonorrhoea is made by isolating the organism in culture

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Dermatology

Correct Answer - D
Ans. D. DNA repair defect
[Ref Rook's 4thie p. 78.12]

Xeroderma pigmentosa
Molecular defect:
Exposure to UV rays damages DNA due to production of convalent
linkages between adjacent pyrimidines (pyrimidine dimmers).

Normally the damaged DNA is repaired by excision and repair.

In xeroderma pigmentosa the repair of UV damaged DNA is defective.
It is an autosomal recessive disorder

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Dermatology

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Dermatology

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Dermatology

Correct Answer - B
Ans. B. Reverse Koebner's phenomenon
[Refhttps://www.researchgate.net/publication/268343496_Proposed_
classification_for_koebner_wolf
isotopic_renbok_koebner_nonreaction_isotopic_nonreaction_other_relatedphenomen]

Annular orange skin lesions in a diabetic indicate towards granuloma annulare.

There have been few reports of disappearance of lesions after
biopsy in granuloma annulare.

This phenomenon is known as reverse Koebner's phenomenon.


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Dermatology

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Dermatology

Ans. A.Cold temperature

Cutis marmorata is a condition where in the skin has a pinkish blue mottled or marbled appearance when subjected to cold temperatures.

It is seen throughout infancy and in 50 % of children.
Rewarming restores the skin to normal.
It is caused by superficial small blood vessels in the skin dilating and contracting at the same time .

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Dermatology

Correct Answer - C
Ans. C. Popliteal fossa

Sites of itching patch in atopic dermatitis Infant; Face (especially cheek), extensors offorearm& legs.
Childhood & adult > Flexures (antecubitalrbitalfoxa,Poplitealfossa).

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Dermatology

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Dermatology

Correct Answer - B
Ans. B. Stratum granulosum
Odland bodies are membrane coated granules in stratum
granulosum, which contain lipids which is responsible for barrier
function of this layer.
This layer also contains diamond shaped keratohyaline granules,
which are the characteristic features of this layer.
These keratohyaline granules contain filaggrin protein which is
responsible for aggregation of keratin filaments.


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Dermatology

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Dermatology

Correct Answer - D
Ans. D. Lichen planus

LP is characterized by shiny, violaceous, flat-topped polygonal
papules which retain the skin lines.
White lines, known as Wickham's striae, may traverse the surface of
the papules.

Linear lesions often appear along scratch marks or in scars
(Koebner phenomenon).

In most cases, the papules eventually flatten after a 6 months to 2 yrs, often to be replaced by an area of hyperpigmentation.

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Dermatology

Correct Answer - B
Ans. is 'b' i.e., Bechet's syndrome
Criteria for diagnosis of Bechet's disease

Recurrent oral ulcer for at least 3 times in 12 months.
Plus any two of the followings :?
1. Recurrent genital ulcer.
2. Eye inflammation with loss of vision.
3. Characterstic skin lesion (erythema nodosum).
4. Positive pathergy test (skin prick test)

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Dermatology

Correct Answer - A
Answer- A. Palpable purpura
Palpable purpura is essential for diagnosis.

Diagnosis is confirmed by presence of palpable purpura with normal
platelet count along with one or more of the following : abdominal
pain, arthralgia/arthritisand mesangial deposition of IgA.

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Dermatology

Correct Answer - A
Ans. A. Idiopathic
[Ref: Neena Khanna Yale p. 61, 63]

Erythema multiforme
Most of the cases of erythema multiforme are idiopathic, but
amongst the causative agents Herpes simplex virus is the most
important cause.


Erythema multiforme is an acute, often self limited erutption
characterized by a distinctive clinical eruption, the hallmark of which is the Target lesion (Iris lesion or Bulle's eye lesion).

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Dermatology

Correct Answer - C
Pemphigus vulgaris is an intraepidermal blistering disease.

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Dermatology

Correct Answer - C
Ans. is 'c' i.e., Clubbing

Clinical indicators of clubbing are

Lovibond profile sign and
curth's modified profile sign".

Lovibond angle is the angle located at the junction between the nail
plate and proximal nail fold. It is normally less than 160°.

In clubbing, the angle exceeds 180° (Lovibond profile sign).

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Dermatology

Correct Answer - A
Ans. is 'a' i.e., Hydroquinone

Skin depigmenting agents in clinical use are
Hydroquinone - most effective and widely used
Kojic acid
Kojicdipalmitate
Azelaic acid

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Dermatology

Correct Answer - A
Ans. A. Penicillamine
Drugs causing pemphigus

Penicillamine
Penicillins and Cefalosporins
Captopril,
Iodine,
Lithium
Phenophthelin,
Propanolol
Rifampicine
Phenytoin,
Phenylbutazone,
Salicylates,
Piroxicam,
Sulphonamides

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Dermatology

Correct Answer - C
Ans. C. Post inflammatory hypomelanosis
[Ref IADVL 3"1/e p. 747-748]

Among given options, postinflammatory hypomelanosis is the best answer.

understand let us have a look at the definition few important terms.
Vitiligo is also an acquired condition with loss of pigmentation but most cases are idiopathic.
It is mainly considered to be an autoimmune condition.
Precipitated by hormonal changes, acute emotional trauma or stress
or any condition leading to immune imbalance.

So, any hypomelanosis resulting after inflammation is known as post inflammatory hypomelanosis (including leucoderma).

Sometimes both the terms are used synonymously.

Whereas the term 'chemical leucoderma' is used only when there repeated exposure (contact) to some specific chemical.

Therefore among given options, postinflammatory hypomelanosis is the best answer as drug reaction is an inflammatory condition
leading to residual hypopigmentatio


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Dermatology

Correct Answer - B
Ans. B. Acanthosis
[Ref Rook's 7th/e p. 7.36]

Important terminology related to epidermal layers Separation of keratinocytes due to loss of intracellular bridges - Acantholysis
Intracellular edema of keratinocytes Ballooning

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Dermatology

Correct Answer - A
Ans.A. Keratinocyte
Tzank cells are acanthoylytic cells i.e. large rounded keratinocytes
with relatively large nucleus with condensed or hazy cytoplasm.

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Dermatology

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Dermatology

Correct Answer - B
Ans. B. Polyhedral
5 characteristic 'P’ of lichen planus
1. Pruritic (itching)
2. Polygonal
3. Purple (violaceous)
4. Plane (flat topped)
5. Papule or plaque
These 5 Ps are the characteristic features of lichen planus lesions
presentation.

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Dermatology

Correct Answer - A
Ans. A. 2%
[Ref IADVL 3'/e p. 891]

In female androgenic alopecia results are similar with 2% and 5%
minoxidil but side effects are more with 5% solution.

Whereas in males 5% is more efficacious.

Therefore in a female patient 2% minoxidil is preferred whereas in
males 5% solution is the preferred choice.

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Dermatology

Correct Answer - D
Ans. D. Subdermal

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Dermatology

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