What is the difference between Western & Traditional Chinese Medicine (TCM)?

Both medicines aim to help person to solve his health problem, but the way these 2 treatment modalities do it differs significantly.
Firstly, while Western medicine is focused on disease, the point of interest in TCM is the patient himself rather than his desease.
Secondly, Western medicine performs diagnostic and treatment procedures in accordance with biomedical information, derived from reserach of human body, whereas TCM observed the nature and then applied its rules in diagnostic and treatment strategies.
Thirdly, Western medicine puts complains and signs of disease, gathered during physical exam, into existing frame of certain medical condition and in case of mismatch between them the problem with desicion making is occuring. TCM, to the contrary, gathers all complains, signs and behavioural preferences and creats the picture of disbalance, where each complain or sign has its place.
Finally, all treatment modalities of TCM successfully used in unchanged form for thouthands of years, whereas Western medicine in its modern form was formed only about 150 years ago. That is why we periodically discover that the medication, which was used by conventional medicine for some purpose for a long time, can also be effective for completely different medical condition, like in case with aspirin: apart from its well-known anti-inflammatory properties it recently became popular by its anticoagulatory properties.