David Rosenthal

Incidents Harmed By

Incident 17301 Report
California Lawsuit by Washington Man David Rosenthal Alleged ChatGPT Gave Unsafe Advice About Stopping a Mood Stabilizer

2026-09-29

A Washington man, David Rosenthal, alleged in a lawsuit that OpenAI's chatbot reinforced delusions, displaced his human relationships, and gave advice about stopping a prescribed mood stabilizer. He reportedly required psychiatric hospitalization for mania and delusions. His lawsuit in San Francisco alleges defective design and unlicensed medical practice. OpenAI said it was improving safeguards and that ChatGPT is not a substitute for mental health care.

Incidents involved as Deployer

Incident 17301 Report
California Lawsuit by Washington Man David Rosenthal Alleged ChatGPT Gave Unsafe Advice About Stopping a Mood Stabilizer

2026-09-29

A Washington man, David Rosenthal, alleged in a lawsuit that OpenAI's chatbot reinforced delusions, displaced his human relationships, and gave advice about stopping a prescribed mood stabilizer. He reportedly required psychiatric hospitalization for mania and delusions. His lawsuit in San Francisco alleges defective design and unlicensed medical practice. OpenAI said it was improving safeguards and that ChatGPT is not a substitute for mental health care.

Related Entities

OpenAI

Incidents involved as both Developer and Deployer

Incident 1730
1 Report
California Lawsuit by Washington Man David Rosenthal Alleged ChatGPT Gave Unsafe Advice About Stopping a Mood Stabilizer

Chatbot users

Incidents Harmed By

Incidents involved as Deployer

ChatGPT users

Incidents Harmed By

Incidents involved as Deployer

Large language model developers

Incidents involved as Developer

Chatbot developers

Incidents involved as Developer

Emotionally vulnerable individuals

Incidents Harmed By

Vulnerable chatbot users

Incidents Harmed By

ChatGPT

Incidents implicated systems

Chatbots

Incidents implicated systems

Large language models

Incidents implicated systems