"Have you ever been so obsessed with someone that your entire world revolves around them – even when they ignore or hurt you?" asked Professor Ahmed Hankir in a TikTok video.

The psychiatrist explains that an obsessive fixation on one person may not be love at all, but limerence—a symptom sometimes seen in borderline personality disorder (BPD), a condition affecting about 1.6–5.9 percent of U.S. adults, according to the National Alliance on Mental Illness ( NAMI ).

Hankir told Newsweek : “Limerence can be one of the most distressing experiences when it appears in the context of BPD because it creates an intense and overwhelming preoccupation with another person.”

His video (@ profahmedhankir ), which has more than 650,000 views, describes limerence as one of the “least known but

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