Thank you for your response I am trying to research hereditary complement deficiency. Everything so far is about Lupus that I have found. Would you suggest finding another starting point to get to this information. This is new research to me so I am a little confused with what I am finding. If you could give any information I would greatly appreciate it. And for what it is worth my daughter's cough and dark eyes have been gone now since mid April. She is on singular 4 mg, nasonex (2xsay), and prevacid. Crossing everything I can that her health stays and doesn't repeat like year. Thank you so much. Have a great day.