SKIN

Question 1

Ring-shaped circular scaly patches + central clearing + scaly borders = ?

Answer 1

TINEA CORPIS

Question 2

Oval, scaly plaques that follow trunk cleavage lines + Centers having crinkled/cigarette paper-like appearance (VIRAL ETIOLOGY)

BEGINS: SOLITARY, pink/skin colored plaque (HERALD PATCH) -> Eruption of multiple scaly/ovoid papules -> Plaques on back

Answer 2

PITYRIASIS ROSEA

Question 3

DRY SCALY PAPULES on sun-exposed areas with ERYTHEMATOUS BASE that may progress to SCC = ?
Tx = ?

Answer 3

ACTINIC KERATOSIS

Tx = FLUOROURACIL CREAM

Question 4

INTENSELY PRURITIC RASH on flexor surfaces of wrist, lateral surfaces of fingers, finger webs + EXCORIATIONS with small crusted red papules around affected areas + HIGHLY CONTAGIOUS = ?
Tx = ?

Answer 4

SCABIES

Tx = 5% TOPICAL PERMETHRIN cream or oral IVERMECTIN

Question 5

DRUGS associated with PHOTOSENSITIVITY REACTIONS:

Answer 5

Antibiotic: DOXYCYLCLINE
Antipsychotic: CHLORPROMAZINE + PROCHLORPERAZINE
Diuretic: FUROSEMIDE, HCTZ
Others: AMIODARONE, PROMETHAZINE, PIROXICAM

Question 6

RECURRENT NODULAR RUBBERY LESION above the eyelid that is PAINLESS without any discharge, redness = ?
What is the next step of management?

Answer 6

CHALAZION (Chronic granulomatous condition when meiobomian gland becomes obstructed)

Management: HISTOPATH EXAM - Risk for SEBACEOUS (meibomian gland) carcinoma AND may look similarly to BASAL CELL CARCINOMA (most common malignancy of lid margin)

Question 7

Difference between FELON and WHITLOW

Answer 7

FELON = bacterial infection in TAILORS (NEEDLE INJURIES)- tense abscess + intense throbbing pain 
Tx = INCISION + DRAINAGE WITH CEPHALOSPORIN 

WHITLOW = viral (HSV) infection in DENTISTS (exposure to infected orotracheal secretions) 
Tx =  SELF-LIMITING