Four Noble Truths
1. There is dukkha or suffering.
2. This suffering is caused by the attachment to desire (tanha).
3. There is a way out of suffering.
4. The way out of suffering is to follow the Noble Eightfold Path.
This outline form is exactly that used by doctors of the Buddha's culture when diagnosing and prescribing for a disease: Identify the disease, its cause, whether it is curable, and the prescribed cure. Thus the Buddha treats suffering as a "disease" we can confidently expect to cure.