It is a compulsion to speak, usually without spinning or knowledge of a subject. The etymology is a bit vague , although 956; 945; 957; 953; 945; ( mania "madness" , "obsession") fits perfectly , 955; 959; 947; 959; 962; ( logos ) refers more to the "study, treatise, knowledge" of things and then to the discourse , to the word to convey the ideas; and in this mania only those who run believe that they know what they are talking about. The mercantilist and advertising invention about "consuming products that bear their brand" is an acronymy ( and when not! ) badly thought out by 'logomania' .
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