My son went through an awful time a few years ago and to cut a long story short what greatly helped him was 5htp.
5-HTP (5-Hydroxytryptophan) is a chemical by-product of the protein building block L-tryptophan. It is also produced commercially from the seeds of an African plant known as Griffonia simplicifolia 5-HTP is used for sleep disorders such as insomnia, depression, anxiety, migraine and tension-type headaches, fibromyalgia, obesity, premenstrual syndrome (PMS), premenstrual dysphoric disorder (PMDD), attention deficit-hyperactivity disorder (ADHD), seizure disorder, and Parkinson's disease.
work?
5-HTP works in the brain and central nervous system by increasing the production of the chemical serotonin. Serotonin can affect sleep, appetite, temperature, sexual behavior, and pain sensation. Since 5-HTP increases the synthesis of serotonin, it is used for several diseases where serotonin is believed to play an important role including depression, insomnia, obesity, and many other conditions.
Depression. Some clinical research shows that taking 5-HTP by mouth improves symptoms of depression. Several studies have found that doses of 150-3000 mg daily for 2-4 weeks can improve symptoms of depression. Some early research shows that 5-HTP might be as beneficial as conventional antidepressant therapy for some people.
Not to be taken with some prescribed medications.
Have a read up on it with your son and see if you think it might help him as it did my son.