Serum Sickness in Emergency Medicine Follow-up
- Author: Susan M Chen, MD; Chief Editor: Erik D Schraga, MD more...
Further Inpatient Care
- Admit the patient if any significant comorbidities are present (advanced or very young age, immunocompromised), if any severe symptoms or hemodynamic instability/hypotension is present, or if the diagnosis is unclear.
Deterrence/Prevention
- Avoidance of the offending agent is the best way to prevent serum sickness. However, in some circumstances, avoidance is not possible.
- Skin tests are indicated before antiserum administration, particularly in patients with a history of allergy to horse dander or in those who have previously received the material. Skin tests reveal the presence of immunoglobulin E antibodies and, thus, help to identify individuals at risk of anaphylaxis. However, these tests are not reliable in the identification of individuals with an increased risk for serum sickness.
- If rapid administration of antiserum is necessary, establish intravenous access in each arm (one access for the infusion of antiserum and the other for the treatment of complications) and premedicate the patient with 50-100 mg of diphenhydramine (Benadryl). If a reaction occurs, temporarily discontinue the infusion, and administer epinephrine and other necessary medications. Once the adverse reaction is halted, resume slow infusion.
Complications
Complications of serum sickness may include the following:
- Vasculitis
- Neuropathy
- Glomerulonephritis (rare)
- Shock
- Death
Prognosis
- Most cases are mild and resolve within a few days. However, subjective complaints and objective findings may persist for several weeks.
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