"Results of the Johns Hopkins study should result in caffeine withdrawal being included in the next edition of the DSM or the Diagnostic and Statistical Manual of Mental Disorders, considered the bible of mental disorders, and the diagnosis should be updated in the World Health Organization's ICD, or The International Statistical Classification of Diseases and Related Health Problems. (emphasis mine)
"Caffeine is the world's most commonly used stimulant, and it's cheap and readily available so people can maintain their use of caffeine quite easily," says Roland Griffiths*, Ph.D., professor of psychiatry and neuroscience at Johns Hopkins. "The latest research demonstrates, however, that when people don't get their usual dose they can suffer a range of withdrawal symptoms, including headache, fatigue, difficulty concentrating. They may even feel like they have the flu with nausea and muscle pain." "
"We teach a systematic method of gradually reducing caffeine consumption over time by substituting decaffeinated or non-caffeinated products. Using such a method allows people to reduce or eliminate withdrawal symptoms," says Griffiths*Roland Griffiths has been a consultant to pharmaceutical companies, the International Food Information Counsel, the International Life Sciences Institute, and the legal profession on issues related to caffeine effects, withdrawal and dependence.
It seems that caffeine is highly more addictive than SSRIs or any other psych-drug.
I hope they start researching the best drug to cope with all these serious withdrawal symptoms and dependence.