This condition usually combines caffeine
dependency with a wide range of unpleasant conditions
including nervousness, irritability, anxiety, tremulousness, muscle twitching, insomnia, headaches, and respiratory alkalosis and heart palpitations. Moreover,
it can increase the acid production in stomach which
can lead to peptic ulcers, erosive esophagitis and
gastroesophageal reflux disease (Sweetman, 2011).