This document summarizes a project called PENTACKLES that aims to build an online healthcare system to predict diseases based on user-reported symptoms. The system focuses on predicting four common diseases: liver disease, diabetes, heart disease, and Parkinson's. It uses machine learning algorithms like KNN, Random Forest, and XGBoost to analyze health reports and predict diseases with high accuracy. The goals are to allow multi-disease prediction in one system and detect diseases early to improve health outcomes.