The etiological idea of diseases and the methodology of treatment varies among different systems of medicine. However, the mode of disease diagnosis (Nosological diagnosis) is common for several systems. It is an undeniable fact that the close association between disease diagnosis and remedial diagnosis prevailed in Modern medicine may not be seen in other holistic systems, however, diagnosis is having its own importance even in other systems. The mode of treatment might be either holistic treatment, specific treatment, symptomatic treatment and general life support to the patient. Modern medicine gives more importance to the precise treatment, whereas, systems like Ayurveda, Homoeopathy, Siddha, Unani, Chinese medicine, Naturopathy etc. give more importance to the holistic concept of treatment, i. e. remedy section by taking into consideration the physical, mental and emotional characters and life situation of the sick individual.

However, in these systems also, disease diagnosis is equally important, because, under certain situations, the functioning of the affected organ or the system of the body needs to be backed up. The in-patient also may require some specific type of support, for which the organ remedies can be deployed. Apart from that, disease diagnosis is essential for planning the disease control measures, prognosis, special precautions, to know living threatening situations, prevention of spreading of disease to others. Diagnosis is quite essential for statistics, research and also to fulfill the academic interests. Especially, due with a medico-legal reasons, the doctor ought to know the detailed health status of his patient. Due to all these reasons, disease diagnosis is vital, regardless of the device of treatment fond of the patient.

Disease diagnosis and remedial diagnosis can be considered as the 2 sides of the same coin, hence, both are having equal importance. Disease diagnosis is performed by correlating the signs and apparent symptoms of the patients (clinical features) with the info written by the bystanders and the lab investigation reports. On certain situations, there may be some difficulty in making a diagnosis, because, several diseases are having almost similar clinical features. Moreover, rarely occurring diseases or a recently emerged disease may not be identified easily, especially with a general practitioner. Under such circumstances, a specialist's opinion might be needed. Very rarely, a group of doctors are involved along the way of diagnosis.

It is not possible to call each and every disease we run into within our everyday practice. As per the International Classification of Diseases (ICD-10), a notable percentage of diseases can't be named. In such cases, a diagnosis is possible notwithstanding having several health related symptoms in the patient. Since the individual is suffering, he needs to be treated symptomatically. Some symptoms or conditions are wrongly understood as diseases by the laymen. Like, clinical manifestations like jaundice, fever, vomiting, headache, malaise etc are not diseases; but clinical manifestations of some diseases. The naming of diseases is performed on several basis. A lot of the diseases are named after the one who invented that specific disease (Buerger's disease, Alzheimer's disease, Weil's disease), some diseases on the basis of area where in fact the disease is common or identified for initially (African sleeping sickness, Madhura foot, Japanese encephalitis), on the cornerstone of some peculiarity of the outward symptoms (Chikungunya), or on the basis of the organism responsible for the infection (Falsiparum malaria, Amoebic dysentery, Bacillary dysentery), or on the cornerstone of the affected organ (Myocarditis, Nephritis, Appendicitis), on the basis of cause(Alcoholic hepatitis, Wool-sorter's disease), on the foundation old (Juvenile rheumatoid arthritis, Senile dementia), on the foundation of pathology(Mixed connective tissue disease, Mucopolyscaccharidosis)etc.

If a small grouping of specific signs and symptoms are present in someone, it is known as syndrome (Edward syndrome, Down syndrome, Laurence-moon syndrome). Nowadays, we hardly stumbled upon a patient having a single disease, whereas nearly all of patients are experiencing a set of diseases such as for instance cardiovascular disease, diabetes, idiopathic hypertension, acid peptic disease, senile dementia, degenerative joint disease etc. Many diseases are classified under certain group of disorders. Like: Degenerative joint disorders, Inflammatory bowel disorders, Psychosomatic diseases, Life-style disorders etc. Here, each group includes several diseases, but are grouped together due with a common features such as pathological or etiological features.

When a person involves the doctor for initially, immediate disease diagnosis may possibly not be possible as a result of various reasons. However, taking into consideration the presenting clinical features and history given by the patient, the doctor may come to a provisional disease diagnosis. After doing the laboratory investigations, the last diagnosis is done by correlating the clinical findings with investigation reports. However the procedure is not kept in pending till the final diagnosis, especially in the event of life threatening diseases such as diphtheria, wherein the procedure needs to be started immediately once the disease is suspected, because, if we await the lab reports to come, the individual might be critical. Some recent laboratory tests assist in early diagnosis, but unavailability of sophisticated labs doing such tests is really a major deficiency faced by many countries.

The development of science and technology has made a revolution in medical science. Now the concept of disease diagnosis done only on the cornerstone of clinical examination is outdated. It's now underneath the custody of some sophisticated machines and laboratory techniques, a few out of these pose more risk to the health. But, the noteworthy point is, under all lab reports, a disclaimer is written as "correlate with clinical findings", which emphasizes the importance of case taking and clinical examination done by the doctor. In this era, wherein doctor-patient relationship is disrupted, we come across many patients saying that a doctor has abruptly prescribed the medicine or referred for lab test without asking much questions and doing any kind of clinical examination.

The recent studies conducted at Mc Master university on the illness diagnosis is remarkable. They found that the name of the illness creates more panic among the patients. Like, a person having sour eructation might not feel bad when the physician says he has acidity, on another hand, he may get embarrassed if the physician tells him that he has Gastro-esophageal reflex disease, which is the medical terminology for recurrent burning eructations. The same happens in most of the cancer patients; once the condition is diagnosed as cancer, the patients mental and emotional status starts deteriorating. But, the physician cant hide the illness from the individual due to several medical and legal issues. The better alternative would be to secretly tell the diagnosis to the bystanders of the patient.

For a precise disease diagnosis, the cooperation from the in-patient and his nearest and dearest is quite essential. Each and every problem felt by the in-patient should be told to the doctor. Some silly matter for the in-patient may be a vital point for a diagnosis and treatment. Similarly, apparent symptoms of long duration might be ignored by some patients. Purposeful hiding of symptoms may be dangerous. Some patients do not tell the doctor about the treatment he'd taken previously. Frequent change of doctor (doctor shopping) also can cause difficulties. During consultation, patients habits, life situations, characters, food and bowel habits, relationship with others etc should be told. The reports of previous treatment and investigations should be told, which might save the full time necessary for a diagnosis. Hence always require a discharge summary while getting discharged from any hospitals. While consulting a health care provider, always take one individual who knows concerning the patient. The patient also can make a note of his symptoms before going for a consultation, so that he won't forget to tell his symptoms completely. In this busy life, there's a trend that as opposed to patient planning to a doctor, he sends somebody to the doctor for a "consultation ".Also there is a growth of individuals preferring over-the-counter purchase of drugs with out a prescription.

Whenever a patient dies or becomes serious during the span of treatment, the next thing would be to file a suit against the doctor or by attacking the doctors and hospitals, consequently of a psychological outbreak and a preconceived indisputable fact that it had been due to medical negligence. Nowadays this is a common story in a lot of the news papers. By promoting the doctor-patient relation ship (which is deteriorating nowadays), and also by going back to the "outdated" family doctor concept, we could solve all the health related issues.