# Hydrochlorothiazide-Induced Exfoliative Rash and Sepsis

## TL;DR

An elderly man developed a severe rash and sepsis after taking hydrochlorothiazide, highlighting rare but serious side effects of the medication.

## Contribution

This case report highlights a rare adverse effect of hydrochlorothiazide, specifically exfoliative rash and sepsis.

## Key findings

- An 86-year-old male developed lightheadedness and exfoliating rash after starting hydrochlorothiazide.
- The rash and symptoms were severe enough to require emergency room evaluation, suggesting a hypersensitivity reaction.

## Abstract

Hydrochlorothiazide is a diuretic agent commonly used to treat hypertension, chronic edema from congestive heart failure or cirrhosis, and nephrogenic diabetes insipidus. Diuretics work by increasing urine output and are classified based on the specific renal segments they act on. As with all medications, they are not without their side effects. The most significant and serious include hypovolemia and electrolyte disturbances. Other more rare adverse effects include dermatitis and hypersensitivity reactions. We discuss an 86-year-old male who presented to the emergency room with complaints of lightheadedness and progressive exfoliating rash that began shortly after starting hydrochlorothiazide in an outpatient setting.