First published in France as a six-volume series from 1996-2003, this narrative is often referred to as an autobiographical graphic novel, but it is more accurately described as a graphic memoir. The author, born Pierre-François Beauchard, tells and draws the story of his family's life with the author's older brother, Jean-Christophe, whom we meet on the first page, in the year 1994: "It takes a moment for me to recognize the guy who just walked in. It's my brother . . . The back of his head is bald, from all the times he's fallen. He's enormously bloated from medication and lack of exercise." Flashback to 1964 when the author is five years old and his seven-year-old brother begins to have frequent grand mal epilepsy seizures. There follows the parents' mostly fruitless search for treatment to control the seizures, including: possible brain surgery which Jean-Christophe refuses in favor of an attempt at zen macrobiotics (this seems to work for six-months), consultation with a psychic, Swedenborgian spiritualism, magnetism, alchemy, exorcism by a priest, psychiatry (a different form of exorcism!).

Jean-Christophe's illness transforms family life as other children mock and fear the boy, the family moves to an isolated area, joins communes, and attempts to cope with Jean-Christophe's increasingly disturbed and disturbing behavior that alternates between passivity and physical aggression. The author has vivid visions and dreams and changes his name to David ("a symbolic act. I've won the war [against the threat of acquiring epilepsy" (164)]; his sister Florence suffers from constant anxiety; his mother grieves for many months after her father dies. As an adolescent and young man Jean-Christophe spends time in several institutions for handicapped individuals as well as at home, where he lives a desultory existence that is interspersed with violence toward the author and his father.

David escapes to Paris, living in a studio apartment paid for by his father, reading, writing stories, drawing, and attending classes at the Duperre School of Applied Arts. "I had to draw and write constantly. I had to fill my time in order to prevent my brother's disease from reaching me" (276). He is lonely but avoids people, feels guilty for neglecting his brother and ‘picking on' him yet is fearful that he too will be taken over by epilepsy, or death. Equally upsetting is when David discovers writings by Jean-Christophe: "He speaks of his despair and loneliness and the words might as well have come from my pen" (316). On and off, in moving displays of empathy, the author attempts to understand what happens to his brother during the seizures -- is he conscious, where does he go, does he die temporarily?

Within the narrative are intercalated multigenerational family histories that include two world wars, and European philosophical and cultural movements that influenced his parents and their search for treatments. The final section of Epileptic relates in words and images the author's adult life as he becomes a commercial artist; struggles through several relationships with women; his own infertility; his ever-present confusion, anger, and misery about his brother's illness; and his founding with five colleagues of the independent publishing house, L'Association: "It's the creation of L'Association that saves me" (327).