Pattern: 对 [thing] 有瘾 = 'be addicted to [thing]'. Used both literally (drugs, smoking) and lightly (games, social media, TV shows). The opposite/related expressions: 上瘾 (shàngyǐn, 'to become addicted'), 戒瘾 (jièyǐn, 'to quit an addiction').
memory
有 'have' + 瘾 'addiction/craving' → literally 'have an addiction'. The character 瘾 has the 疒 (sickness) radical because traditionally addiction was framed as a disease.
