Acute inflammation is often beneficial but can also be detrimental to the host, depending on its cause, severity, duration and specific circumstances. For example, acute inflammation is often responsible for much of the permanent damage that occurs as a result of heart attacks and strokes. Acute inflammation can also exacerbate pre-existing conditions, such as by precipitating asthma attacks, migraine headaches or seizures in those suffering from the underlying malady.
Chronic inflammation is always detrimental
Whereas acute inflammation can be either beneficial or detrimental, chronic inflammation always involves detriment to the host.