anal fissure

How will a person suffering from anal fissure perform Salaah?

Q: I am a mazoor suffering from urine incontinence. I keep tissue paper all the time in my underwear. Now I am suffering from anal fissure. Because of it, some pus comes out from the anal passage every time, so I am unable to keep wudhu and maintain my purity? I am already keeping tissue for incontinence of urine. I am really worried and leaving prayers. Please make an easy way for me.