Can prostatitis cause bloating and constipation, lower middle stomach pain or what else can it be?

Here are some ...: Prostatitis alone should not cause bloating & constipation, which are related with GI functional disorders, although it may cause some perineal discomfort if the diagnosis is correct. Of note, prostatitis has been overused and even misused for men with vague mild symptoms related with urination. So, seek professional evaluation and counseling so to avoid unnecessary confusion & anxiety.