I suddenly reverted to my 4-year-old self at 18 – it was the first life-threatening sign my brain was attacking itself

Elise Seymour, an 18-year-old, experienced a sudden and alarming regression to childlike behaviors, including an obsession with Disney songs like those from Frozen, signaling a rare and serious brain condition. While on holiday in Rhodes, Greece, she began feeling confused, agitated, and excessively tired, which turned out to be the first symptoms of a life-threatening brain-swelling disease. This case underscores the importance of recognizing unusual behavioral changes as potential medical emergencies, especially in young adults.