Almost nonfunctional since I lost my beloved husband. Now my son...

I have been almost nonfunctional since I lost my beloved husband Emmanuel suddenly became ill and died only sixteen days after developing pneumonia on November 9th,2015.
Now I have learned that my beloved youngest son has been steadily declining after seizures which were treated but his other mysterious ailments such as skin rashes and other serious conditions could not be diagnosed. He finally found a doctor who was determined to diagnose my son's malady. I hear that my boy had a biopsy last week.
Two of my seven living children know of my son's dire condition, but did not want confide in me about his losing ground till the other day saying that they are in fear of losing him but not allowing me to mourn with them that Brendan is in danger of death. He has I hear, finally that he has arranged his funeral He will be fifty seven days after his birth on April seventeenth.
It is not about me but I am in agony knowing abruptly that he is so very ill. I will be 90 on this Sunday and a few days later my boy will be fifty years of age. I buried one son in 1996 and my beloved husband five months ago now facing that devastation of a second son dying. The news is devastating and life now has no meaning.
Does anyone have a child with the same seizures and illness which has progressed to the point of death? Does anyone know why his new and competent doctor would order his biopsy? I called to just hear his voice today and his wife answered. She is a hard worker and never misses going to her job daily. She just sounded stoic and resigned but kept her feelings and his condition under wraps but fear the biopsy results were not
good. I will only hear from someone lets me know that when Brendan is dying or already gone. Your input will let me understand why the first seizure is treated but the symptoms he has are so dire. Thank you

I cannot