The authors studied the effects of caffeine withdrawal on 14 subjects at baseline and during a 4-day period of abstinence from caffeine. They studied the results from quantitative electroencephalograms performed on these subjects and gauged any changes that may have been evoked during this withdrawal period. The participants were also evaluated for the occurrence of somatic dysfunctions. Examinations for the presence of somatic dysfunctions were performed on the participants before caffeine cessation and on Days 1, 2 and 4 of abstinence. Results showed that the number of somatic dysfunctions increased significantly during the process of caffeine withdrawal.