The proliferation of digitization, Internet of Medical Things (IoMT) technology, and consumer electronics has significantly increased the quantum of medical data, giving rise to the inclusion of Digital Twins (DTs) in the healthcare and medical fraternity. DTs enhance the operational efficiency of consumer electronics used in healthcare and aid in optimizing medical data processing, storage, and sharing. New opportunities and applications in healthcare can be unlocked by harnessing the full potential of DTs leading to ameliorated productivity, cost saving, and overall development of society. Most of the available DT architectures and frameworks are derived from other manufacturing industries which are not suitable for healthcare. Several key challenges associated with DTs are overlooked in such architectures which struggle to deal with challenges pertaining to privacy, security, standardization and interoperability. This paper presents a comprehensive overview of DT technology (DTT) for healthcare applications acknowledging key research findings from the literature. The challenges associated with implementing DTT and their possible solutions are highlighted. Several use cases of DT in healthcare are elaborated and dowelled upon. Additionally, the future aspects of DT in the healthcare sector in conjunction with consumer electronics are presented.