My Son Is 35 Yo, Has Extreme Depression And Anxiety,

My son is 35 yo, has extreme depression and anxiety, lost his home, job car, etc- no income- moved in with me about a year ago- recently has terrible pains in his feet and legs, weakness, weight loss due to lack of appetite and losing control of his bladder on and off- took him to the ER where they really did nothing because of no insurance- gave him Zanax, and Norco- diagnosed him with plantar fasciititis, anxiety and tachycardia. His medicare kicks in on Dec 1st- do you have any advice? the pain meds are not helping and it seems to be getting worse.