Loved one just got out of a week long stay at hospital. Issue was with swollen red-purple . After various work-ups he was told he had blood clot in leg and lungs. Was given blood thinners, morphine and oxygen. Bruising moved on to one of his feet and now section of foot and finger tips are deep purple. Diagnosed Buergers disease.?? What??? Never heard of this disease?? He was discharged last night but cant breath without oxygen tank??? How did this happen??? What doctor speciatly should he be seeing?? Where do we go from here?? Is this temporary??? What is best course of action??? Please share experiences and recommendations as this is super scary!! !!! Thank you!!!