This study has outlined ten standard items that are commonly present in the literature on patient history taking: (1) greetings to the patient; (2) inquiry about the chief complaint (CC); (3) history of present illness (HPI); (4) acquisition of past medical history (PMH); (5) inquiry about medications; (6) collection of family history; (7) assessment of social history; (8) systematic review; (9) exploration of the patient's ideas, concerns, and expectations (ICE); and (10) expression of empathy. Typically, in developing countries, doctors focus mainly on the patient's chief complaint (CC) and skip most of the steps [6;7]. To investigate physicians' burdens and history-taking challenges, a survey was conducted, aiming to address the following research questions (RQ): (RQ1) What is the present workload situation among physicians in Bangladesh? (RQ2) To what extent do physicians face difficulties during the history-taking process? (RQ3) How do physicians and their organizations manage patients' medical histories? (RQ4) To what extent do physicians follow all necessary history-taking steps to ensure quality healthcare services for patients? (RQ5) What level of interest do physicians demonstrate in adopting a digital solution for the management of patients' medical histories? Covering a comprehensive medical history in a short consultation period poses challenges. Innovative digital health systems like the Portable Health Clinic and the efficient health data management system offer potential solutions to grab necessary medical history within limited consultation time [8]. The primary objective of this study is to delve into the challenges faced by physicians in history-taking procedures. Additionally, the study introduces the Smart Health Gantt Chart (SHGC) as a novel visualization system designed to assist physicians in efficiently managing lifelong medical histories. Many visualization systems exist, but they may not be fully compatible for comprehensive visualization purposes. Upon comparing with existing visualization systems, it becomes evident that the current systems have significant limitations. These limitations include the lack of availability of a person's lifelong medical history, absence of summarized information for quick understanding, patient control on their health data, limited sharability, etc. [9]. To address the challenges in history taking and decision making and to overcome the limitations of existing systems, the Smart Health Gantt Chart (SHGC) is introduced in this study. The Smart Health Gantt Chart (SHGC) is an innovative and interactive tool that presents a comprehensive view of a patient's medical history for quick understanding and decision making. The SHGC can be used by both healthcare providers and patients to monitor the progress of medical conditions and to make efficient decisions about future treatment options. When fully developed, it is intended that the system will integrate past medical history and health events, social history, and real-time health data. This information will then be presented as severity of illness and likely outcomes by a color coded display tailored to the needs of the patient, their clinicians, or both. The paper proceeds as follows: Section 2 explains the research methodology employed, providing insights into the study's design and execution; Section 3 comprehensively analyzes the results obtained from surveys regarding medical history-taking challenges; Section 4 introduces and elaborates on the concept of the new visualization system, outlining its key features and functionalities; in Section 5, a detailed discussion on the implications and limitations of the system is provided, highlighting its potential benefits and areas for improvement; finally, in Section 6, the study leads up to a conclusive summary, synthesizing the key findings and proposing avenues for future research.