Fever elevated liver enzymes

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Seyedmahdi Pahlavani, M.D. [2], Usama Talib, BSc, MD [3], Mahshid Mir, M.D. [4]

Differential diagnosis of Fever and elevated liver enzymes

Conditions that can cause fever and elevated liver enzymes are presented in the table below, ordered based on their prevalence:

Disease		Clinical manifestations					Laboratory findings			Additional findings
		Symptoms			Signs		Transaminitis (elevated AST and ALT)	Viral markers	Autoimmune markers
		Nausea & vomiting	Abdominal pain	Arthralgia	Jaundice	Hepatomegaly
Acute viral hepatitis	Hepatitis A	+++	++	+	+++	+	+++	HAV Ab	---	Fecal-oral transmission Usually acute and self limit Fever usually present
	Hepatitis B	+++	++	++	+++	+	+++	HBs Ag, HBc Ab, HBe Ag	---	Percutaneous transmission most common May cause acute hepatic failure or may become chronic Fever usually present
	Hepatitis C	+++	++	++	+++	+	+++	HCV Ab	---	Percutaneous transmission is most common Higher rate of chronic progression Associated with extra hepatic manifestation such as cryoglobulinemia and membranoproliferative glomerulonephritis Fever usually present
	Hepatitis E	++	++	+/-	++	+	+++	HEV Ab	---	Fecal-oral transmission May cause fulminant disease in pregnancy Fever usually present
	CMV hepatitis	+/-	++	-	+	+	++	CMV-specific immunoglobulin (Ig)M antibody	--	Usually manifests as mononucleosis syndrome fever usually present
	EBV hepatitis	+/-	++	-	+/-	+	++	Heterophile antibody test, monospot test	--	Systemic manifestations as mononucleosis syndrome Fever usually present
Autoimmune hepatitis		-	+	+/-	++	+	+++	---	ANA, ASMA, anti SLA/LP, ANCA, ALKM-1 antibodies	Liver biopsy may be required for diagnosis
Alcoholic hepatitis		+/-	+	-	+	-	AST>ALT	---	---	History of alcohol intake
Drug induced hepatitis		+/-	+	-	+	+	++	---	---	May cause either cholestatic or hepatocellular injury