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Cureus
Sep, 2023;15 (9): e46199.

Chlorthalidone-Induced Fixed-Drug Eruption: Unmasking an Uncommon Reaction to a Common Diuretic.

Mariana Marrero Castillo, David Kaufman, Juanita Valdes Camacho, Kesler Bourgoyne, John Jacob, Benedict Amalraj, Neerja Gulati
Author Information
  1. Mariana Marrero Castillo: Internal Medicine, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  2. David Kaufman: Allergy and Immunology, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  3. Juanita Valdes Camacho: Allergy and Immunology, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  4. Kesler Bourgoyne: Allergy and Immunology, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  5. John Jacob: Internal Medicine, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  6. Benedict Amalraj: Internal Medicine, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
  7. Neerja Gulati: Pulmonary Medicine, Ochsner Louisiana State University Health Shreveport - Academic Medical Center, Shreveport, USA.
PMID: 37908922 DOI: 10.7759/cureus.46199

Abstract

Fixed-drug eruptions (FDEs) are dermatological reactions characterized by specific skin lesions triggered by certain medications. Our case reports commonly used medications that can cause drug-induced skin reactions. Chlorthalidone, a widely used diuretic, had not been prominently linked to FDEs. Here, we present the case of a 45-year-old African-American male who developed classic FDE skin lesions following the initiation of chlorthalidone therapy. This case underscores the imperative for further investigation and heightened awareness among healthcare professionals regarding chlorthalidone-associated FDEs. Findings suggest that such reactions might be more prevalent than previously acknowledged, underscoring the significance of prompt diagnosis and effective management of drug-induced skin responses. Notably, the patient's lesions showed complete resolution upon discontinuing the diuretic, reinforcing the causal relationship. This case is an essential reminder of the importance of vigilance in monitoring patients for adverse drug reactions, even in unlikely medications, such as chlorthalidone.​​​​​​.

Keywords

chlorthalidone fixed-drug eruption hypertension mucocutaneous lesion systemic hypertension thiazide diuretics

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