In Better Call Saul, what condition does Chuck McGill claim to suffer from?

In Better Call Saul, Chuck McGill claims to suffer from electromagnetic hypersensitivity.

Chuck believes that electromagnetic fields from electricity, phones, and electronic devices cause him severe physical symptoms. He therefore lives in a house without ordinary electrical power, covers windows, and asks visitors to leave electronic devices outside.

The condition is central to the show’s legal and family drama. Jimmy initially helps Chuck manage his environment, while Howard and the firm treat the situation as a serious health issue. Later, the series presents evidence that Chuck’s symptoms are psychological rather than caused by electromagnetic fields, creating a major dispute over his competence and treatment.

The show does not present electromagnetic hypersensitivity as a straightforward scientific diagnosis. It uses Chuck’s belief in the condition to explore illness, identity, professional authority, and the brothers’ competing perceptions of reality.