Hi Lybrate-user, Yeast infection to you probably due to changes in sweat quality or may be hormonal. But chances of change in sweat and skin quality are greater in your case (summer). But all this are not the primary cause this are secondary causes. Primary causes are our nature our emotions, our reactions, etc. As you are enlisted hypertension, joint pain, irritable bowel syndrome, so all this are definitely bad effects of your nature, I my practice I have seen this are bad effects mostly of angry or irritable nature. So there is a definite and permenant solution of your yeast and all problems with a medicine but for that we need your time, to discuss and understand your problems and your personality as per homeopathy point of view. But without appointment it is much difficult so take a appointment, so that I can help you.