Generalized/Social Anxiety. Please help!

Hi All,
I am posting for my brother who is having social anxiety. He has had this anxiety for about 8 years, which started when he was working at a job with a very difficult boss. My brother did not speak about his difficulties at work, and I believe from holding his frustations in for some time (about 3-4 years) he began developing physical symptoms of anxiety afterwards, such as facial tightness, shortness of breath, and other physical symptoms in social settings. The only supplement which has helped pretty well has been St. John Wort. He is also going to neurofeedback sessions weekly. He tried causticum 30C, 3x/day for 2 days, however did not notice much of a benefit. I have filled out the form below which I borrowed from another forum. Thank you.

1. Age: 26
2. Sex: Male
3. Built: slim
4. Complexion: medium tone
5. Occupation: health care student
6. Single/married: single
7. Country: US
8. List out all your PROBLEMS with its since how long,which part is affected,which side,what you feel during complaint etc:in an order(which came first then which came?
He first started having facial tension about 7 years ago on both sides of his face due to anxiety
Then came shortness of breath a little after
He feels very self conscious during social conversations as he does not like to appear nervous
Additionally, he does report that he is happy. His main problem is the facial tension which he would like to overcome, and he does not report anxiety himself
He is somewhat of a worrier and can be preoccupied about the family

a)Worsening factors for each complaint (eg:-by pressure,what time,heat,cold,season,food,eating,after
sleep,by sweat,,by stooping,after stool & urine,after bathing etc.?)

Symptoms (facial tension, body locking up, shortness of breath) worsened by stress, lack of sleep, and especially social conversations (especially in large groups)

b)When Its Better,for each complaint (eg: by pressure,what time,by heat, by cold, any season,any food, eating,after sleep,by sweat,after stool & urine ,after bathing etc.?)

Symptoms (such as facial tension, shortness of breath) improved by exercise, sleep, deep breathing, meditation, saint john wort

c) In your opinion, What is the expected cause for your problem?From injury,fall,cold exposure,sun exposure ,physical and mental exertion etc.?

My brother worked in a lab 8 years ago while in college, and had a very negative experience with his boss. The boss was constantly criticizing him, and she was very difficult to work with. Also, she would not guide him as to how to do the lab work. Consequently he made several mistakes. My brother also is under the impression that his mistakes in the lab ended up being detrimental to the lab and the lab members. Although there is no evidence for this, I think that he still feels some unresolved guilt.
Several years after this negative experience, my brother ended up revealing that he ended up being fired from the job, and he said that after he was fired he cried and felt a big blow to his self esteem.
When my brother revealed the difficulties of this experience, he broke down crying and it was obvious that he was holding in this problem for a while.

9. Mind:sensitive/angry/sad/weeping/fear of/anxiety/shy etc.,memory,desire company,grief,lewd etc.

Sensitive, anxiety, shy
He is trying his best to move on and be happy

10. Thermal:which weather do you prefer hot or cold? Which one you can tolerate well?

Prefer heat, tolerate heat well

11. Do you have Frequent or occasional nausea,vomiting to any food,headache,mouth ulcer,,allergy sneezing,gas trouble,leucorrhea(white discharge-females) ,dandruff,hairfall etc.explain if any

Occasional headaches

12. Stool:regular/quantity/frequent desire/satisfied/bleeding?

Regular stools

13. Urine: regular/quantity/frequent desire/satisfied

Regular urine

14. Menses: regular?scanty or profuse?early or late?how many days?frequency of cycle?any complaints before or during menses like pimples,backache,white discharge,pain in abdomen,legs etc.,irritability,constipation,diarrhea,nausea etc?
ANS:

15. Sweat:profuse,scanty,offensive,stains

Normal


16. Sleep:satisfied/disturbed?particular dreams?usual sleeping positon?

He sleeps pretty well, he does not report complaints

17. Appetite: how often,quantity,satisfied?

Pretty good appetite

18. Thirst: how many glasses ?how often?

Normal thirst

19. Cravings:salt/sweet/sour /milk/egg/meat/veg/fruit/vinegar etc.

He likes sweet and salty foods

20. Aversion: salt/sweet/sour /milk/egg/meat/veg/fruit/vinegar etc.

No aversions

21. Intolerant foods if any which might be your favorite or not.

None

22. How is your sex life?no desire/premature ejaculation/no erection/painful sex?

He is not sexually active, he does have premature ejaculation when around females

23. Do you have diabetes/BP/Cholestrol/thyroid(Hypo/Hyper) etc Done any surgey ?

None

24. Do you have any skin complaints-itching, warts, rashes, discoloration etc.?

None

25.Your skin type: oily or dry?

Oily

26.Do you have any bad habits or addictions? coffee,masturbation, smoking,tobacco, alcohol etc.

None

27.List out all medicines you have taken till now and its result

Saint Johns wort: pretty good results in terms of improving facial tension.

Causticum: slight calming

Many other supplements with minimal long lasting benefits:
Passion Flower, ashwaganda, Ginseng, Kava Kava, Valerian Root, GABA

28.Any other things which you think it make you unique from others ..

My brother has had this problem for many years, and I would like for him to overcome it. What makes this unique is that he does not report emotional/mental anxiety, and his main symptoms are his facial tension and shortness of breath which cause significant distress. I feel that he does show some symptoms when just around the family, however his symptoms greatly worsen when in a social setting, especially in a large group. If there could be some homeopathic remedies that could help him, it would be great.
Thank you.