Bugs and Bugs
While not as prevalent in the developed world, this little bug has killed more people than any other infectious disease in history.
What is mycobacterium tuberculosis?
Commonly misinterpreted as KD, systemic juvenile idiopathic arthritis (sJIA) characteristically has this elevated lab result.
What is ferritin?
A preventable negative-sense RNA virus often presents with these symptoms, often referred to as the "4 C's."
What is cough, coryza, conjunctivitis, and Koplik spots?
Exposure to this substance can lead to many of the same symptoms as KD, such as fever, rash and mucosal changes, but importantly very often displays neuropsychiatric symptoms as well.
What is mercury?
As opposed to EBV, which predominantly affects adolescents, this other common cause of pharyngitis is more common in younger children.
What is GAS?
Polyarteritis nodosa (PAN), similar to KD, can present with fever and rash, but unlike the polymorphous rash found in KD, this rash is often described as "net-like."
What is livedo reticularis?
This specific member of the Herpesviridae family is a common cause of febrile seizures in pediatric patients.
What is HHV-6?
Often presenting with fever, rash, and conjunctivitis, this drug reaction is a potential adverse effect of many anti-convulsants (among other drugs) like phenytoin and carbamazepine.
What is SJS?
Leptospirosis, another common cause of fever and rash, is typically contracted after exposure to this.
What is animal urine?
Often caused by beta-lactams, this drug reaction can present with fever, rash, and lymphadenopathy (just like KD!!!) but is specifically NOT a type 3 HSR.
What is serum sickness like reaction?