Re: edit/update

 "It can also be from alcohol intake, hemolytic anemia, certain medications, hypothyroidism, etc."

In the last few years I've had various blood tests--my numbers have always been normal. Is there any way they can test to find out the cause of my gout symptom? I don't drink and I don't take medication.

Normal labs will rule out a number of causes.  And not drinking and not taking medications rule these causes out.  But this still leaves a number of potential causes so it could take a lot of testing to narrow it down further.  Since hypothyroidism can cause this and hypothyroidism is pretty common I recommend starting by checking your basal body temperature.  A consistently low temp combined with other hypothyroid symptoms can indicate a low thyroid.  Also make sure you are drinking plenty of water and eating a low purine and uric acid diet.