Dermatology Flashcards
Cyst infection - Tx?
Have to drain infected cysts. If not infected can drain or refer based on location or can leave it
Lyme’s disease tx?
Doxycycline for 10-21 days, at most in asymptomatic or patients with non-specific sx
Why do we get itchy?
C-fibre stimulation by neuro-inflamatory mediators
What is a herald patch and what does it indicate?
Single patch that shows up 1 -20 days before pityriasis rosacea - looks oval, pink and is about 2-5 inches in diameter
Guttate Psoriasis
Shower of lesions, often triggered by strep pharyngitis, generally concentrated on the trunk. Can treat with antibiotics for underlying strep, may use topicals including emollients, low-potency topical steroids, coal tar and calcipotriol. (As in all psoriasis)
Big painful road rash that you need to debride
Soak dressings in xylocaine viscous
BHCG?
Urine and qualitative - just to confirm
Quantitative is to follow up on - you need comparison.
Molar pregnancy vs blighted ovum
Blighted ovum - empty sac, not fertilized - tx: with a D&C or leave it be 2weeks about, can start trying as soon as done
Molar - fetal tissue tumour
Diabetes increases the risk of?
Miscarriages, preterm delivery, fetal growth alteration, unexplained demise, hydramnios
Erythema nodosum?
Large reddish and blue lesions - consider crohns, mycobacteriumm, pyoderma gangrenous
Urticaria features?
Check to see if blanch-able, usually wide spread
Post viral can last for months
Stevens-Johnson Syndrome
Severe drug hypersensitivity reaction, caused by sulfa drugs, antiepileptics, antibiotics are the most common causes. Leads to blistering necrosis, and sloughing
(TENS - more severe SJS due to >30% of the body surface area being involved)
Satellite lesions?
Yeast infection
Petechial rash on dependant areas
Meningitis, can be fatal, do not miss
