Vaidyajivanam is a classical Ayurvedic text that provides a comprehensive understanding of the principles and practices of Ayurvedic medicine. Here are four features of Vaidyajivanam:

1. Treatment methods: Vaidyajivanam provides a detailed description of various treatment methods used in Ayurvedic medicine, including medicinal herbs, diet, lifestyle modifications, and cleansing procedures.

2. Diagnosis: The text provides a detailed description of the process of diagnosis in Ayurveda. It discusses the various methods of diagnosis, such as examination of the pulse, urine analysis, and clinical observation.

3. Disease prevention: Vaidyajivanam provides guidelines for disease prevention, emphasizing the importance of a healthy lifestyle, proper diet, and exercise.

4. Comprehensive approach: The text emphasizes a comprehensive approach to healthcare, which includes not only the physical body but also the mind and spirit. It discusses the importance of mental and emotional balance in maintaining optimal health and provides guidelines for achieving this balance.