2.1 Introduction2.1.1 The need for the study2.1.2 Artificial intelligence2.1.3 Intelligent system2.1.4 Simple rule-based medical expert system2.1.5 Fuzzy logic2.1.6 Fuzzy expert system2.1.7 Neural network2.1.8 Adaptive neuro-fuzzy inference system2.2 Background2.3 Development of neuro-fuzzy system2.3.1 Membership functions2.3.2 Rules2.3.3 Training2.3.4 Testing and validation2.4 Result2.5 Conclusion