Masquerades, ICU, pharyngitis, immuno Flashcards
Chitlins…you say?
Yersinia
Bulls eye - rash?
lyme disease (erythema migrans or STARI)
Behcet’s disease? treatment?
triad of aphthous oral ulcers, genital lesions, and recurrent eye inflammation. Can also have pustule at site of venipuncture. Tx with colchicine
Sweet syndrome?
sudden onset of fever and painful rash on the arms, legs, trunk, face, or neck. It’s also known as acute febrile neutrophilic dermatosis. Associated with acute luekmia
Pyoderma gangrenosum syndrome, dx and associations?
- Painful, pathergy, purulent base, purple
- Inflammation, irregular border
- Erosions
- Dx of exclusion
- Exam
- Rule out Labs (RF, APLS, Cryoglobulin, ANCA)
- Microscopic evaluation (neutrophilic dermatosis)
- GI disorders (IBD)
- Arthritis (RA, PAPA)
- Neoplasms (solid organ, MPN)
- Genetic predisposiiton
Monospot test tests?
rapid test for EBV infection
what are the two types of HLH?
HLH is hemophagocytic lymphohistiocytosis. Primary (familal) or secondary - triggered by infections (EBV, HIV histoplasmosis) or malignancy (lymphoma/leukemia)
HLH clues?
- EBV or other infection with progressively symptoms
- elevated ferritin
- cytopenia with negative infectious evaluation
what are the Yamaguchi criteria?
This is for adult still’s disease:
Major:
- Fever for more than 1 week
- arthritis/arthralgia more than 2 weeks
- nonpruritic mac-pap rash during febrile episodes
- >10K Leukocytes with 80% granulocytes
Minor:
- Sore throat
- lymphadenopathy
- hepatosplenomegaly
- Abnormal LFts or LDH
- Negative ANA & RF
Clues to Adult Still’s disease?
- Evanescent salmon colored rash
- elevated ferritin
- pharyngitis
- Koebner phenomenon - rash elicited by stroking sin or areas of pressure
what are the infectious causes of Erythema nodosum?
SMORES SHINTS (Streptococci, Mycoplasma, OCP, Rickettsia, Eponymous (Behçet),Salmonella, Sulfonamides, Hansen’s Disease (Leprosy), IBD, NHL, TB, Sarcoidosis. Also, granulomatous infections, yersinia, and campylobacter
what is lofgren syndrome?
triad of hilar lymphadenopathy, acute arthritis, erythema nodosum
what are the buzz words for sarcoidosis?
hilar lymphadenopathy, erythema nodosum, uveitis, aspetic meningitis with basilar enhancement, non-caseating granulomas
what is kikuchi?
acute necrotizing histiocytic lymphadenitis
buzz words for kikuchi?
Young woman with acute onset of fever, cervical lymphadenopathy with atypical lymphocytes (mono-like syndrome) with lymph node biopsy showing necrotizing adenitis with histiocytosis
what is clinical characteristics of DRESS syndrome?
2-6 weeks after drug initiation with morbiliform rash, lymphadenopathy, facial edema with visceral invovlement (hepatitis, interstitial nephritis, interstitial pneumonitis). HIgh mortality, slow resolution with 6-9 weeks of relapse
what triggers do you need to look for in DRESS?
Allopurinol, anti-seizure drugs, vancomycin, raltegravir, dapsone, and sulfas
what is erythema multiforme?
immune mediated distinctive target lesions associated with oral, ocular, genital mucosal lesions that is self-limiting 10-14 days associated with infections, drugs.
what is the difference between SJS and TEN?
SJS<10% while ten>30%
characteristics of SJS/TEN?
fever with erosive mucositis of oral, urogenital, ocular sites between 4-28 days with partial/full thickness, painful necrolysis with fever 8-12 days. Leucopenia and no eosinphils. positive nikolsky sign
what is a positive nikolsky sign?
slight rubbing of the skin resulting in exfoliation of the outermost layer.
what are notorious non-infectious drugs associated with hyperthermia?
allopurinol, anticonvulsants, recreational drugs
what are the common antibiotics associated with hyperthermia?
sulfonamides, nitrofurantoin, beta lactams, minocycline
what are the things you need to think about with hyperpyrexia (T>41.5)?
NMS, malignant hyperthermia, serotonin syndrome