Dermatology

Question 1

red crusted lesions around the corner of her mouth and below her lower lip

Answer 1

Zinc def

Question 2

angular chelosis

Answer 2

vit B1(RIBOFLAVIN) def

Question 3

Causes of skin bullae

Answer 3

congenital: epidermolysis bullosa
autoimmune: bullous pemphigoid, pemphigus
insect bite
trauma/friction
drugs: barbiturates, furosemide

Question 4

itchy,bullous lesions on the elbows,ankles,burning.
papules and blisters

Answer 4

dermatitis herpetiformis at elbows,ankles,shoulder,scalp are caused in celiac disease.
There are 2 other forms of rashes that celiac disease can present with.

erythema nodosum; tender nodules on the shin

pyoderma gangrenous; ulcers on the legs.

Question 5

butterfly rash; erythematous rash over the cheeks and bridge of the nose +alopecia
differentials?

Answer 5

SLE and Dermatomyositis.

But dermatomyositis is very rare so always the preference in the answers would be SLE.

Question 6

Bowens disease and mycosis fugoides both have red scaly patches.
but Bowens dis is an early type of sq cell cancer and mycosis fungicides is a blood cancer(T cell lymphoma)

tx of Bowens dis

Answer 6

cryotherapy
5 flurouracil cream

Question 7

tx of psoriasis

Answer 7

1)emollients
2) if there is scaling we can use potent topical steroids;
betamethasone
3) vit d analogues; eg an active form of vit d is a calcitriol ointment
4) Active psoriatic scalp psoriasis;
Betamethasone+vitamin d
5) coal tar
For psoriatic arthritis;
steroid are not working then go for infliximab
For kids;
vitamin d analogue;calcitriol as steroids can no the used for kids

Question 8

drugs for male pattern baldness

Answer 8

regaine(Minoxidil) and finasteride

Question 9

drugs for hirsutism

Answer 9

eflornitine

Question 10

drugs for acne rose(erythema developing around chin, nose and cheeks)

Answer 10

topical 0.75% metronidazole cream BD(8-12weeks)+
ORAL OXYTETRACYCLINE 500MG BD

Question 11

farmer,maculopapular ring with central clearing
flu like illness

Answer 11

lyme dis
causes erythema migrans
treated with erythromycin and doxy

Question 12

mild acne; only on the face
tx

Answer 12

benzyl peroxidase cream

Question 13

moderate acne; face,chest and back
tx

Answer 13

antibiotics
if they are not working then isotrtinoin

Question 14

moderate acne; face,chest and back
tx

Answer 14

antibiotics
if they are not working then isotrtinoin

Question 15

eczematous rash on the chin
tx

Answer 15

hydrocortisone 1%cream

Question 16

red scaly rash around the cheeks and the eyebrows
can reach from behind the ears to neck
like tauqeer’s
dx
tx

Answer 16

sebborhic dermatitis
mild; steroid+antifungal cream=hydrocortisone +miconazole cream
severe cradle cap;
salicylic acid in aqueous cream/ketoconazole cream/1% hydrocortisone cream.

Question 17

how are plantar warts spreaded?

Answer 17

by indirect physical contact.

Question 18

tx of psoriasis that causes bruising on the body?

Answer 18

methotrexate;that causes bone marrow suppression.

Question 19

well defined edges of an erythematous area

Answer 19

erysipelas

Question 20

tx of erysipelas

Answer 20

Penicillin

Question 21

tx of warts?

Answer 21

keratolytic agent(salicylic acid) or cryotherapy

Question 22

non itchy hypo/hyper pigmented scaly macules

Answer 22

malassezia furfur
tx; selenium sulphide shampoo or topical imidazole cream

Question 23

itchy scaly lesions more inflamed than in centre

Answer 23

tricophyton rubrum
tx; topical imidazole cream or oral anti fungal;terbinafine

Question 24

red lump/burgundy colour development at birth, continue to grow during the first year of life.
regress completely after 4-5 years

Answer 24

capillary hemangioma

Question 25

erythema toxic aka

Answer 25

neonatal urticaria

Question 26

in cases of severe urticaria
which anti histamine Is preferred?

Answer 26

cetirizine over chlorphenramine because it is non sedating.

Question 27

purple lesions
HIV/AIDS patients
risk of bleeding
not painful or itchy

Answer 27

kaposi sarcoma

Question 28

tx of actinic keratosis

Answer 28

one lesion; cryptherapy with liquid nitrogen(freezing)
1 lingering lesion not being effected by cryotherapy;excision
If more lesions including face;5 flurouracil cream;bd for 6-8 weeks
if the area is sun exposed/ongoing eczema; use diclofenac gel.

Question 29

impetigo
bacteria involved?

Answer 29

Staph Aureus

Question 30

reiters syndrome is associated with what kind of rash?

Answer 30

keratoderma blennorhagicum;
thickened skin on the palms and soles
cobble stone appearance

Question 31

differentials of widespread target lesions;

Answer 31

erythema multiform
Stevens johnson synd

Question 32

difference between erythema multiform and Steven Johnson synd

Answer 32

E.M=No mucosal involvement
SJ S; mucosal involvement

Question 33

difference b/w Viral and bacterial exanthem

Answer 33

viral; red blanching maculopapular rash starting from the cheeks spreading to the body
BACTERIAL;iniially on the chest spreading to the limbs

Question 34

black holes on the toes
low grade fever
severe itchiness

Answer 34

tungiasis

Question 35

tx of impetigo

Answer 35

mild;
fusidic acid cream
moderate;
flucloxacillin

Question 36

hyperpigmented
pedunculated lesions
(lesser trelat signs)

Answer 36

seboorhic keratosis

Question 37

insulioma;hyperglycemia,anemia,wt loss
red rash
dx?

Answer 37

necrolytic migratory erythema

Question 38

pyoderma gangrenosum involves

Answer 38

pustules then ulcers and then blisters
PUB

Question 39

scabies incógnito is?

Answer 39

in kids itchy widespread pustules,nodules, excoriation,small papule on palms,hands,behind ears, head and the scalp is scabies.