Can one become addicted to learning? Is it possibly to become addicted to learning?

What drives this addiction and how can it be controlled?

Note:
I'm not sure this is the right exchange for this question... Its the best fit as far as I can see though.
Any form of excessive secretion of dopamine, can not be good, be it drugs, learning, sex etc. workaholism is a form learning addiction,  workaholism is said to be as an addiction
very similar to alcoholism. Workaholic as a “person whose pleasure from learning things at work has become so extreme, that it indicates clear disturbances with his/her personal happiness, bodily health, and interpersonal relations, and with his smooth social functioning” . Therefore,  there are some perspectives related to workaholism. workaholism at least initially was formulated to be referred as addictive process (Sussman, 2012).
 Negative side effects of workaholism or the strive or need to constantly work towards gaining knowledge may include subjective emotional sorrow or feeling of “burned out” (Sussman, 2012).

Based on that search,
these authors induced that addiction includes: 
(a) engagement in the behavior to achieve
appetitive effects
 (b) preoccupation with the behavior 
(c) temporary satiation
 (d)loss of control
 (e) suffering negative consequences
hope my answer helped. if you want to read in depth on this. do refer to the reference for article.
reference :  Sussman, S. (2012). Workaholism: A Review. Journal Of Addiction Research &amp; Therapy. doi: 10.4172/2155-6105.s6-001