United Kingdom, July 29 -- Sami Sheen's OCD has caused her to "starve".

The 21-year-old model suffers from obsessive-compulsive disorder and she finds it frustrating when people claim they have the condition - which features patterns of intrusive thoughts and fears that can lead to repetitive behaviours - and it compels them to "keep [their] room clean and organised" because the mental health problem has had a major impact on her life as she often refuses to eat food she's just bought because she's convinced it is inedible.

She said in a TikTok post: "Nothing aggravates me more than when someone is like, 'Oh, my god. I'm so OCD I need to keep my room clean and organised.'

"I'm so OCD that even if I buy something from the grocery store ...