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| Term | Definition |
|---|---|
| Obsessive compulsive disorder (OCD) |
Anxiety disorder consisting of obsessions (repeated, upsetting, unwanted thoughts) and compulsions (repeated activities that bring no pleasure and are not productive, but are meant to make the unwanted thoughts go away) |
| Odd Chain Fatty Acid |
fatty acids with an odd number of carbon atoms. |
| Oppositional defiant disorder |
A compulsive pattern of disobedient, hostile, & defiant behaviors towards authority figures. |
| Oral medication |
Medication taken by mouth. |
| Organic Acidemia |
Inherited disorders of amino acid catabolism in which toxic substances are produced as a result of an enzymatic blockage. |
| Ornithine |
Functions in the urea cycle and acts to change citrulline to arginine. |
| Ornithine transcarbamylase deficiency |
Also called OTC deficiency. A urea cycle disorder resulting from an enzyme deficiency of ornithine transcarbamylase. |
