Medical term for amnesia or memory loss. Used in clinical contexts.
After the accident, he was diagnosed with amnesia.
健忘症 is a more general term for forgetfulness or memory impairment, while 記憶喪失症 specifically refers to amnesia or loss of memory.
Compound of 記憶 (memory), 喪失 (loss), and 症 (condition/disease). A straightforward medical term.