How does Roderick change from the begging to the end of the story?

In Edgar Allan Poe's "The Fall of the House of Usher," Roderick Usher undergoes a profound transformation from a nervous, sensitive individual plagued by fear and anxiety to a more chaotic and despairing figure as the story progresses. Initially, he is depicted as an artistically gifted but mentally unstable man, deeply affected by his family's decay and the oppressive atmosphere of the Usher mansion. By the end, after the traumatic events involving his sister Madeline's return from the dead, Roderick descends into madness, culminating in his death as the house itself collapses, symbolizing the total dissolution of the Usher lineage. This change illustrates the impact of isolation and the weight of familial curses on the human psyche.