上網上成癮表現為多種行為和癥狀，這些行為和癥狀可能會對個人和家庭造成負面影響。以下是一些常見的上網上成癮的癥狀：
1. 沉迷于社交媒體，如Facebook、Twitter、Instagram等， spend countless hours on the internet scrolling through feeds and engaging in online conversations.
2. 頻繁使用電子郵件和即時通訊工具，如電子郵件、WhatsApp、Facebook Messenger等， spend excessive time on these platforms sending and receiving messages.
3. 花費大量時間在線游戲，如Video Games, spend a significant amount of time playing games on the internet.
4. 逃避現實生活中的挑戰和壓力， use the internet as a way to cope with problems and negative emotions.
5. 忽視現實生活中的人際關系， use the internet to spend time with friends and family members in a way that is not healthy or productive.
6. 無法設定自己的上網時間， spend countless hours on the internet without setting boundaries or making time for important activities.
7. 出現焦慮、抑郁或其他心理健康問題， have symptoms of mental health problems such as anxiety or depression, due to excessive internet use.
8. 對上網行為失去控制， become unable to control their internet use and spend excessive time on the internet.
以上是一些常見的上網上成癮的癥狀，如果或身邊的人出現了這些癥狀，建議及時尋求幫助。上網上成癮可能會對個人和家庭造成嚴重的影響，因此建議人們設定上網時間，積極參與現實生活中的活動，并與專業人士尋求幫助。
