Changes

*hydroxylation of fatty acids.

*hydroxylation of fatty acids.

ARD can be claasified as '''idiopathic''' or '''secondary'''.  In cases of idiopathic ARD, the only consistent finding is response and remission on antimicrobial therapy.  In contrast, there is usually an underlying intestinal disease in cases of secondary ARD.   

ARD can be claasified as '''idiopathic''' or '''secondary'''.  In cases of idiopathic ARD, the only consistent finding is response and remission on antimicrobial therapy.  In contrast, there is usually an underlying intestinal disease in cases of secondary ARD.  This includes diseases causing:

 

Few studies have documented the scale of increase in bacterial numbers or whether the growth is responsible for the clinical signs.   

==Diagnosis==

==Diagnosis==