Alexander Portnoy confesses his most intimate sexual anxieties and neuroses to his psychiatrist in a frantic, non-linear monologue. The protagonist struggles to reconcile his intense carnal desires with the suffocating expectations of his overbearing mother and his own rigid moral upbringing. His objective is to find liberation from the guilt that defines his existence, yet he is constantly thwarted by his own compulsive behaviors and the societal pressures of mid-twentieth-century America. The narrative framework is an extended, stream-of-consciousness session that exposes the raw, unfiltered interiority of a man trapped by his own psyche.

Discussion often centers on the novel's aggressive, high-energy prose style and its unapologetic exploration of taboo subjects. Readers frequently highlight the balance between the protagonist's frantic humor and the underlying tragedy of his psychological entrapment. Critics often note the work's significance in shifting the boundaries of mid-century American literature regarding sexual candor. The narrative's intensity is frequently cited as a defining feature that keeps the reader engaged despite the repetitive nature of the protagonist's complaints. Many readers find the depiction of the protagonist's family life to be a central pillar that grounds the more chaotic elements of the story.