FASTR is what you get when a Silicon Valley product designer uses design thinking to successfully resolve a persistent and pernicious anal fissure. As I discovered, a chronic fissure (sometimes called an anal ulcer, anal lesion, or anal tear) can disrupt pretty much everything in life, robbing you of joy, peace, and productivity. If this condition is affecting you or a loved one, you’re likely seeking a fast and lasting solution. Those were my goals, so I developed a protocol that worked for me. FASTR (Fissure-in-Ano Self-Treatment and Repair) consolidates key data, personal experience, a little discretion, and plenty of empathy in a way that can save you time and reduce suffering. I hope that sharing it as a pattern can help you build your own effective protocol. (This is the EPUB version. A PDF version is also available.)