Hi, he is severely disabled so he can't do the breath test, it all started with him taking soil based probiotics. When he passed dark stools there were long stringy bits in it and it looked to me like candida. I have mentioned sibo to my doctor but he won't have it ? He does have autism and candida is quite often a problem in children with autism. My normal doctor is not trained in anything like this, it is a real problem to get diagnosed with candida or sibo on the NHS in the U K.