A. Maladaptive preoccupation with internet use, as
indicated by at least one of the following.

1. Preoccupations with use of the internet that are
experienced as irresistible.
2. Excessive use of the internet for periods of time
longer than planned.

B. The use of the internet or the preoccupation with its
use causes clinically significant distress or impairment
in social, occupational, or other important
areas of functioning.

C. The excessive internet use does not occur exclusively
during periods of hypomania or mania and is not
better accounted for by other Axis I disorders.
school functions) use.

From 2003, “Problematic Internet use: Proposed classification and diagnostic critera,” Depression and Anxiety, 17:201-216 by
Nathan A. Shapira, M.D., Ph.D., Mary C. Lessig, B.S., Toby D. Goldsmith, M.D., Steven T. Szabo, Ph.D., Martin Lazoritz, M.D., Mark S. Gold, M.D., and Dan J. Stein, M.D., Ph.D.