Question by lancee813: Amphetamine Abuse (strange symptom)? I know someone (60 yrs. old) who was abusing dexadrine and then adderall for over a year, during this time I noticed that they were constantly humming this short tune, over and over and over again, all the time. This humming began around the time the abuse began. He was combining the amphetamines with Vicodin , Effexor, and Seroquel. He has supposedly been clean of the amphetamines for the last month yet the humming continues. Could this possibly be a sign of brain damage from the drug abuse? Also, why did the drug induce this constant humming in the first place? Thanks for any help.. Best answer: Answer by Brandon Csubscription: ? Dictionary/ thesaurus Medical dictionary Legal dictionary Financial dictionary Acronyms Idioms Encyclopedia Wikipedia encyclopedia ? Hutchinson encyclopedia amphetamine (redirected from Amphetamine Abuse) Also found in: Medical, Encyclopedia, Wikipedia 0.30 sec. Ads by GoogleDrug Abuse H ...