Derm/MSK Flashcards
“Stuck-on” appearance
seborrheic keratosis
Red plaques with silvery-white scales and sharp margins
psoriasis
Most common type of skin cancer; lesion is a pearly-coloured papule w/ a translucent surface and telangiectasias
Basal cell carcinoma
Honey-crusted lesions
impetigo
A febrile Pt w/ h/o DM presents w/ red, swollen, painful lower extremity
Cellulitis
Pos Nikosky’s sign
Pemphigous vulgaris
Dirty, velvety patches on back of neck
Acanthosis nigricans; check fasting blood glucose to rule out DM
Dermatomal distribution
Varicella zoster
Flat-topped papules
lichen planus
It is-like target lesions
erythema multiforem
Presents w/ a herald patch, christmas-tree pattern
pityriasis rosea
pinkish, scaling, flat lesions on the chest and back; KOH prep has a “spaghetti-and-meatballs” appearance
Tine versicolor
4 characteristics of a nexus suggestive of melanoma
asymmetry, border irregularity, color variation, large diameter
Premalignant lesion from sun exposure that channeled to SCC
Actinic keratosis
“dewdrops on a rose petal”
Lesions of primary varicella
“cradle cap”
seborrheic dermatitis; treat conservatively w/ bathing and moisturizing agents
Ass. w/ Propionibacterium acnes and changes in androgen levels
Acne vulgaris
Painful, recurrent vesicular eruption of mucocutaneous surfaces
Herpes simplex
Inflammation and epithelial thinning of the anogenital area, predominantly in postmenopausal women
Liche sclerosus
Exophytic nodules on the skin w/ varian degrees of scaling or ulceration; the second most common type of skin cancer
Squamous cell carcinoma
Back pain exacerbated by standing and walking and relieved w/ sitting and hyper flexion of hips
spinal stenosis
Joints in hand affected in RA
MCP and PIP; DIPJs are spared
Joint pain/stiffness that worsen over the course of the day and relieved by rest
Osteoarthritis
Genetic DO associated w/ multiple fractures and blue sclerae, commonly mistaken for child abuse
Osteogenesis Imperfecta
Hip & back pain along w/ stiffness that improves w/ activity over the course of the day and worsen at rest. Diagnostic test?
Suspect ankylosing spondylitis. Check HLA-B27
Arthritis, conjunctivitis, and urethritis in young men. Associated organisms?
Reactive (Reiter’s) arthritis. Most commonly ass. w. Chlamydia. Also consider campylobacter, shigella, salmonella, and ureaplasma.
55yo M has sudden, excrutiating first MTP joint pain after a night of drinking red wine. Dx, workup, and chronic Tx?
Gout. Needle-shaped, negatively birefringent crystals are seen on joint fluid aspirate. Chronic treatment w/ allopurinol or probenecid.
Rhonboid-shaped, positively birefringent crystals on joint fluid aspirate
Pseudogout
Elderly F presents with pain/stiffness of shoulder and hips; she cannot lift her arms above her head. Labs show anemia and elevated ESR.
Polymyalgia rheumatica
Active 13yo M has anterior knee pain
Osgood-schlatter disease
Bone fx in a fall on an outstretched hand
Distal radius (Colles’ fracture)
Complication of scaphoid fx
Avascular necrosis
Signs suggesting radial nerve damage w/ humeral fracture
wrist drop, loss of thumb abduction
Young child presents w/ proximal muscle weakness, waddling gait, and pronounced calf muscles
Duchenne muscular dystophy
First-born female who was born in breech position is found to have asymmetric skin fold on newborn exam. Dx? Tx?
Developmental dysplasia of the hip. If sever, consider a Pavlik harness to maintain abduction
11yo AAM presents w/ sudden onset of limp. Dx? Workup?
Slipped capital femoral epiphysis. AP and frog-leg lateral x-rays
Most common primary malignant tumor of bone
Multiple myeloma
