Etheredge was rushed to an Orlando, Florida hospital on Saturday (September 1), with Bobby later tweeting that she was under observation from doctors.
"She is recovering and in good spirits. Please keep my family in your prayers," Brown wrote on the microblogging site.
A source close to the family has now told People that Alicia's seizure was likely brought on by diabetes.
Etheredge was apparently diagnosed with the disease in 2009 while pregnant with her 3-year-old son Cassius.
The Brown family has not commented on this latest report.
Brown and Etheredge wed in front of family and friends in Hawaii in June after dating for a few years.
'My Prerogative' singer Brown also emerged from a stint in rehab last week.