Hello HV! I've had a 30+ year battle with candida, which was diagnosed by the medical community as crohns disease. After dealing with gastroenterologists for 15 years and getting no relief, I decided a lifetime sentence of constant office visits with only temporary relief was not for me. The only thing that controlled symptoms was prednisone, and except for occasionally being able to work my way off it, I continue taking 15mg/day.

Prednisone would not help candidiasis.  It would likely make it worse.  Prednisone can make a person with Crohn's feel better, but it will also make the underlying condition worse.

To make a long story shorter I have found a few things that have, if not cured the candida have made the symptoms dramatically better. I always had a positive attitude and thought I could beat what I called the "thing".

Reducing stress always helps.

Most MD's believe depression is the cause of gastro problems. It turns out that it's the exact opposite! 80% of serotonin is produced in the gut.

Yes, most of the body's serotonin is produced in the gut.  This is because serotonin has other roles though such as intestinal peristalsis and blood pressure regulation.  There are 18 different types of  serotonin receptors in the body.  From what I recall in research I did a while back the serotonin produced by the gut does not cross the blood-brain barrier.  So the brain has to generate its own serotonin.

While researching on curezone last year a poster said he was taking 400mg of 5-htp and it had helped. I had taken 50mg 5-htp for years with no apparent results. In fact I had tried all kinds of supplements for years with nothing to show for it except empty bottles and an empty bank account.

Depression has numerous causes, not just low serotonin.  So what works for one person will not always work for someone else.

Last June I started working my way up to 400mg/day starting with 100mg/day for a week and increasing 100mg/week. I started feeling better by the third week and once I hit 400/mg I felt great! I had energy, my fistulas healed and pain was gone! Had a slight relapse 2 months later and started taking high doses (6 capsules/day Garden of Life) of raw probiotic capsules. The gastro problems have pretty much gone away as long as I stay with low carb high protein diet and no sugar or alcohol.

Depending on the protein this may or may not be a good idea.  Most animal proteins are high in the omega 6 fatty acid arachidonic acid that promotes inflammation.

Starting this Feb had pain that MD concluded was gall bladder. Had ultrasound, nothing showed up. April 8 went to emergency with FIRST EVER case of kidney stone. Pain went away next day but stone didn't pass. Starting what I thought was daily fever 3 days later, but temp reading were normal 97.9. Would feel like face and head was burning and very red. Had kidney stone removed surgically yesterday. It was pretty big 8mm x 5.5mm.

You need to have the stone analyzed to find out what kind it is.  This can help determine what may have caused it to prevent future ones.

I don't do dairy in any form, but do use 5hr energy and coffee.

All that coffee is also going to increase inflammation in your body and can contribute to uric acid kidney stones.

The questions:
Is there any evidence of 5-htp causing kidney stones?

No.

What is the surface temp caused by?

I am not sure with such limited information.  But  it sounds like some sort of flushing, which is caused by dilation of the capillaries close to the surface of the skin.

What now? I finally beat this sonofbitchin candida, at least intestinally, I'm sure it is in all organs.

Working your way off all that caffeine would be a great start.

And again you need to determine what kind of stone you passed.  There are numerous types of kidney stones.

Other than that it will depend on what symptoms you are still dealing with.