Common medications that can cause manic symptoms include antidepressants, prednisone, Parkinsons disease medications, thyroid hormone, stimulants (including cocaine and methamphetamine), and certain antibiotics. Bipolar spectrum
Bipolar spectrum disorders include: bipolar I disorder, bipolar II disorder, cyclothymic disorder and cases where subthreshold symptoms are found to cause clinically significant impairment or distress. These disorders involve major depressive episodes that alternate with manic or hypomanic episodes, or with mixed episodes that feature symptoms of both mood states. The concept of the bipolar spectrum is similar to that of Emil Kraepelins original concept of manic depressive illness. Bipolar II disorder was established as a diagnosis in 1994 within DSM IV; though debate continues over whether it is a distinct entity, part of a spectrum, or exists at all. Criteria and subtypes
The DSM and the ICD characterize bipolar disorder as a spectrum of disorders occurring on a continuum. The DSM-5 and ICD-11 lists three specific subtypes:
Bipolar I disorder: At least one manic episode is necessary to make the diagnosis; depressive episodes are common in the vast majority of cases with bipolar disorder I, but are unnecessary for the diagnosis. Specifiers such as "mild, moderate, moderate-severe, severe" and "with psychotic features" should be added as applicable to indicate the presentation and course of the disorder. Bipolar II disorder: No manic episodes and one or more hypomanic episodes and one or more major depressive episodes.
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Gigantism Clinical Trials from U.S. National Institutes of Health
Gigantism information from U.S. National Library of Medicine, U.S. Department of Health and Human Services & the National Institutes of Health 
Epidemiology of acromegaly from Pubmed.gov US National Library of Medicine & National Institutes of Health