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Houston Man Sues Whataburger for Up to $1 Million Over Onion Allergy Incident

Demery Ardell Wilson alleges negligence after being served onions he is allergic to, despite requesting none, as Whataburger denies liability in court.

A Whataburger meal in Las Vegas, Nevada, on Nov. 10, 2024.
Stock image of burgers.
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Overview

  • Demery Ardell Wilson filed a lawsuit on April 25, 2025, in Harris County, Texas, seeking between $250,000 and $1 million in damages for alleged personal injuries.
  • Wilson claims he suffered an allergic reaction requiring medical attention after being served onions at a Whataburger location on July 24, 2024, despite requesting none.
  • The lawsuit alleges negligence and describes the meal as having a 'manufacturing defect' that rendered it 'unreasonably dangerous.'
  • Whataburger formally denied the allegations on May 16, 2025, and demanded strict proof of Wilson's claims in court filings.
  • This case follows a similar lawsuit Wilson filed against Sonic Drive-In in 2024, which was dismissed after the restaurant contested the claims.