Hi,Dear,Thanks for your query to HCM.
Dear I read facts of your query and reviewed it in context to your health issues submitted.
I understood your health concerns and feel Concerned about them.
Your friend seem to have died by
heart attack or from respiratory arrest.This could be normal death or from foul play.
Other causes of mouth foaming after death needs to be fixed by autopsy before giving exact cause of death in your friend's case.
Cause of this purple face and foaming mouth after death could be due to-due many reasons-cardiac/respiratory failure/could be from
poisoning / or death from sleep apnoea.
Review of the other causes is needed for proper diagnosis of death in your friend's case.
You need to take opinion from -family doctor and Coroner and forensic expert doctor.
For this to verify
Second opinion from family doctor/ Physician/forensic doctor - would be needed.
Just don't worry and be patient and co-operate with your doctors,till you verify with your attending doctors.
Hope this would help you to treat your health issues in the best way possible.
Welcome for any further query in this regard to following link-
http://doctor.healthcaremagic.com/Funnel?page=askDoctorDirectly&docId=70229
Wishing Good Healthy Life!!
Dr.Savaskar M.N.
Senior Surgical Specialist
M.S.Genl-CVTS