I have been diagnosed with social anxiety disorder. It's a social phobia that causes anxiety. 
Sorry to hear that. What are the symptoms you experience? 
I get physical symptoms like trembling, palpitations, nausea, and swetting.
That sounds very troublesome. Do you take medication or therapy?
Yes I take prescription meds but I don't self -medicate or use alcohol like some do.
I agree, self-medication is harmful and one should always consult a professional before trying any medicine. 
Yes, people can become addicted to things they use without a drs. approval depending on the substance of course.
You're right and addiction only makes things worse! You should also try yoga to relieve your anxiety.