Systemic Flashcards
Reactive arthritis
Reactive arthritis is associated with two types of infection: (1) post-dysentery caused by Gram-negative bacteria (e.g. Shigella, Salmonella, Yersinia, Campylobacter); and (2) post-venereal (e.g. caused by Chlamydia).
The classic triad of reactive arthritis are: urethritis, polyarthritis, and conjunctivitis. The medical student way to remember this is: “can’t see, can’t pee, can’t climb a tree”.
A mucopurulent and papillary conjunctivitis is the most common ocular manifestation of reactive arthritis. This conjunctivitis can be associated with a mucocutaneous discharge but without a swollen preauricular node. Other ocular signs include iritis, a punctate epithelial keratitis, and anterior stromal infiltrates.
Other systemic signs include “keratoderma blennorrhagicum” (i.e. papules, vesicles, or pustules on the palms and soles), “circinate balanitis” (non-painful penis rash), sacroiliitis, plantar fasciitis, and Achilles tendonitis. Reactive arthritis can also be associated with life-threatening conditions such as cardiac conduction defects, pericarditis, and aortic insufficiency. In fact, some believe that Christopher Columbus died from cardiac complications from reactive arthritis.
More than 75% of individuals with reactive arthritis are HLA-B27 positive. Interestingly, reactive arthritis is much more common in AIDS patients. The true cause of this increased incidence is currently unknown.
Heerfordt-Waldenstrom
Heerfordt-Waldenstrom syndrome is a type of sarcoidosis syndrome characterized by uveitis, parotiditis, fever, and facial nerve palsy.
Other syndrome in sarcoid: Lofgren = legs =triad of erythema nodosum, b/L hilar adenopathy, arthritis
Behcet’s
Behcet’s pts typically have more prominent non-ocular manifestations than ocular ones. Systemic manifestations include recurrent oral ulcers (MC sign), epididymitis, skins lesions (e.g. erythema nodosum), CNS involvement, and arthritis, cardiac (myositis). The anterior segment is usually more prominently involved in Behcet’s disease and includes a severe uveitis often with hypopyon formation. Posterior segment signs include widespread occlusive vasculitis, retinal necrosis, ischemic optic neuropathy, and severe vitritis. This disease is associated with HLA-B51. HLA-A29 is associated with birdshot choroidopathy; HLA-DR2 is associated with pars planitis; and HLA-B27 is associated with the various spondylarthropathies (e.g. ankylosing spondylitis).
Morbidity: eyes (2/3), vascular dz (1/3), CNS dz (10-20%).
Corticosteroids - mainstay for initial Rx of acute BD, but most pts eventually become resistant to steroid therapy. Starting dose 1.5 mg/kg/day with gradual taper.
Start immunosuppression with immunomodulating agents: azathioprine, cyclopsorine, infliximab.
Hypopyon with or without fibrin
Behcet’s - less likely to have fibrin
HLA B27 - more likely to have fibrin
Subglottic stenosis
Wegener’s
Tracheal collapse or h/o tracheostomy
polyarteritis nodosa
Phlebitis
Sarcoidosis, MS, Birdshot, Eales
Arteritis
ARN, PAN, SLE, Susac (retinoscochleocerebral angiopathy)
Both arteritis and phlebitis
Behcet and toxoplasmosis
Retinitis: focal vs. multifocal
Focal = toxoplasmosis Multifocal = HSV/VZV, candidiasis
keratoderma blenorrhagicum
“psoriasis” on palms/soles - seen in Reiters
brown aseptic abscesses
rash on palms/soles in adults
syphilis (secondary/maculopapular) and Reiters (keratoderma blenorrhagicum)
Photophobia
2/2 inflamed iris-ciliary body contracting –> pain 2/2 consensual pupillary response
Myopia and hyeropia in uveitis
Myopia from cataract
CME causing hyeropia
Child
JIA
toxoplasmosis
toxocariasis
pars planitis
Young adult
Anklyosing spondylitis
pars planitis
Fuchs
Adult > 50 yo
Birdshot
serpiginuous
masquerade
Male in uveitis
most things female (MEWDS, PIC/MCP, JRA)
Male = ankylosing spondylitis, Behcets (but incomplete M = F), PAN.
Nodules in uveitis
sarcoidosis, lepropsy, RA
rash on palms/soles in kids
Kawasaki
Erythema nodosum
red nodules on lower EXTENSOR surfaces. Panniculitis - inflammation of subactue fatty tissue. delayed hypersensitivity CUBS Crohns, Coccidomycosis, cat scratch Ulcerative colitis Behcet Sarcoid
livedo reticularis
dilation of capillaries and venules 2/2 blood stasis or vascular changes. Worse in cold temperatures. RSPD PAN SLE dermatomyositis RA
Myalgias
PAN
Tendonitis
Reiter’s syndrome (Achilles’ tendon)
Arthritis
JRA Behcet's (but not as big of a feature) Lyme dz RA = inflammed synovium Reiters (seronegative arthropathy = inflammed tendon @ insertion; PAIR)
sarcroilitis
anklyosing spondylitis, IBD
enthesitis
inflammation @ site of ligament or tendon insertion = HLA-B27 assoc/arthropathies
sausage digits/dactylitis =
psoriatic arthropathy
sausage digits
psoriatic arthritis
Peripheral neuropathy
PAN
Headache
VKH
Aseptic meningitis
Behcet’s
saddle nose deformity
syphilis, Wegener’s, relapsing polychondritis
Relapsing polychondritis
Inflammed pinna/auricular chondritis (80%)
Abs to collagen (also present in sclera)
episcleritis (40%) and scleritis (15%)
nasal chondritis - saddle nose deformity
vestibular dysfxn
Oral ulcers/aphthous stomatitis
Behcet’s and Reieters
SOB
Sarcoidosis, Wegener’s, TB?
diarrhea
Crohn’s, Whipple dz, ulc colitis
abdominal pain from ischemia
PAN
orchitis
PAN
Renal problems
PAN = protenuria, vascular nephropathy, renal vessel aneurysms
Wegener’s/intersitital nephritis = hematuria, casts
Wegener’s = glomerulonephritis
TINU
Animals
Deer = lyme dz DUSN - racoons and dogs pigeons - cryptococcus mosquitos - wnv black flies = onchocerciasis
KPs - active vs. inactive
active = creamy white inactive = pigmented or glassy comment on shape = stellate KPs in Fuchs, herpes, toxoplasmosi comment on shape (lower half of cornea) classically diffuse (limbus to limbus) in fuchs, sarcoid, herpes, CMV
Hypopyon
HLA-B27, endophthalmitis, corneal ulcer, Behcet’s, Rifabutin, malingnacy, “silicone oil”
Heterochromia
siderosis bulbi (darker iris)
fuchs’
waardernburg’s syndrome = white forelock, broad nasal bridge
congenital horner’s (lighter)
snowball vs snowbank
snowball = cell/proteinaceous debris (sarcoidosis) snowbank = fibroglial tissue and cells leaking from peripheral phelbitis. located inferiorly along pars planitis
Swollen ON and retina
MCC of swollen ON and retina = CRVO (also think malignant HtN)
cat scratch
DUSN (early)
IRVAN = young healthy (mostly female), retinal arteritis OU with numerous aneurysmal dilations of the retina and ON head arterioles, neuroretinitis, uveitis)
Visual loss 2/2 exudative maculopathy and NV sequelae of retinal ischemia