My son doesn't have anxiety, but I have had panic and anxiety attacks for the last 15 yrs. The cause can vary from emotional to environmental, which is why finding the root cause, if at all possible, is desirable. Perscriptions just relieve the symptoms, but don't heal.
In my case, therapy plus cognitive behavior modification helped, along with eating a cleaner diet. Then I started using YL essential oils and they relived the remaining symptoms. I still have a few triggers, but since I usually know when to expect them, I apply oils ahead of time and it's not a problem. I do carry a bottle of Stress Away in my purse, just in case I need it.
If it were my child, I would closely observe his/her environment and start making lists. What kinds of products are they using on their bodies? Sadly, most soaps, shampoos and other HBAs are quite toxic. What kinds of foods do are they eating regularly? Do they seem more anxious after eating certain types of foods? How much processed foods are they eating? What are they drinking. Are they drinking enough water? Most ppl are chronically dehydrated but not realize it. Blood becomes thicker when dehydrated and may not be moving toxins out of the body quickly. Many drinks today are also nothing more than chemicals.
It can be a long process, but if you are able to figure out if there are any environmental factor and remove them, that will probably help a lot. Other Young Living essential oils that are helpful with nerves and anxiety are Lavender and Valor.