Nicknamed cell phone elbow, this condition is known clinically as cubital tunnel syndrome and is caused by your shoulder rubbing against the ulnar nerve.Excessive, problematic use can also cause nomophobia the fear of being without a mobile phone.
Many people are reporting stiffness, pain, and muscle strain in their handsor a worsening of existing conditions, such as thumb arthritis and carpal tunnel syndromeresulting from excessive phone use.
Nomophobia can also: Affect sleep quality and quantity, which can have adverse effects on health and well-being. Cause physical symptoms, such as headaches, neck pain, eye strain, or carpal tunnel syndrome, as a result of excessive or improper phone use.

Furthermore, visual representations like the one above help us fully grasp the concept of Excessive Phone Use Syndrome.
More recently, researchers who study the relationship of mobile phone use and mental health have also found that excessive or maladaptive use of our phones may be leading to greater incidences of depression and anxiety in users.
Using phones excessively can lead to eye strain which is also known as Computer Vision Syndrome, The effect of phone brightness to the eyes is the same as the from using the computer or watching TV in excess.
Such details provide a deeper understanding and appreciation for Excessive Phone Use Syndrome.
Excessive phone use measurably reduces grades, with in-class users scoring a letter grade and a half lower on average. Compulsive phone use raises academic anxiety, disrupts sleep, and fragments attention all of which compound poor academic outcomes.
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Excessive cell phone use affects basic interpersonal relationships and health across generations.28 According to Bilieux,29 problematic smartphone use is linked to neuroticism, extraversion, and impulsivity.