What is the opposite condition of Hyperthymesia?

Hyperthymesia is a rare condition in which affected individuals possess a superior autobiographical memory, enabling them to recall an exceptionally large number of personal experiences and events with vivid detail and accuracy.

The opposite condition of hyperthymesia is known as hypomnesia. Hypomnesia refers to a mild to moderate impairment or loss of memory that affects an individual's ability to recall information, specifically episodic memory related to personal experiences.