Painful sores on scalp, under arms. Redness, painful, have white worms inside. Where can I go for treatment?

Hi there XXXXXXX. I empathise with the problem with you have & it must be difficult to handle. I note all the sites you describe & dont doubt your word. The worms you describe are probably maggots oriented & are not an uncommon occurence in the elderly & immunocompromised. Firstly though, you need to fix an appointment with your local Gp & physically 'demonstrate' the 'worms' to him on the ground. If indeed they are so, then 'turpentine' application locally does wonders to 'extricate them'. In addition, you may need a covering antibiotic ointment like 2% mupirocin & oral antibiotics eg metronidazole & these will have to be prescribed by your GP on the ground nearest you.
This is as clear & lucid an opinion as i can render online & do trust it guides you on your way to a full & complete recovery. Do please close this query if you satisfied & do send us your valuable feedback. Cheers & Godspeed!