The answer to 'why is my shower burst pipe' is that a burst pipe in the shower is typically caused by freezing temperatures, corrosion, or high water pressure. Symptoms may include leaking, flooding, or a sudden loss of water pressure in the shower. Solutions can range from simple pipe repairs to replacing the entire plumbing system, depending on the root cause.
If the burst pipe is due to freezing temperatures, it's important to insulate exposed pipes and let the water drip to prevent future freezing. Corrosion can be addressed by replacing old, worn-out pipes. High water pressure may require the installation of a pressure-reducing valve. In many cases, it's best to call a professional plumber to diagnose and fix the issue properly.