Argan, a wealthy hypochondriac, attempts to control his daughter's future by forcing her into a marriage with a medical student to ensure his own constant access to healthcare. The protagonist's obsession with his perceived ailments creates a volatile household environment, pitting him against his pragmatic servant Toinette and his daughter Angélique, who seeks to marry for love rather than convenience. The narrative unfolds through a series of farcical deceptions, including disguises and a staged death, as the characters navigate the absurdity of Argan's medical fixation. This play utilizes a three-act structure to expose the incompetence of the medical profession and the greed of those surrounding the protagonist.

Readers and critics frequently highlight the play's enduring relevance as a sharp critique of medical pretension and human vanity. Discussion often centers on the character of Toinette, who serves as the voice of reason amidst the surrounding chaos and absurdity. The pacing is noted for its rapid-fire comedic exchanges that balance the darker themes of exploitation with lighthearted farce. Scholars often point to the play's significance as Molière's final work, noting how it synthesizes his career-long interest in social satire and character study. The work remains a staple in theatrical studies for its effective use of irony and its ability to maintain comedic tension through the protagonist's persistent delusions.