Acute conditions are severe and sudden in onset. This could describe anything from a broken bone to an asthma attack. A chronic condition, by contrast is a long-developing syndrome, such as osteoporosis or asthma. Note that osteoporosis, a chronic condition, may cause a broken bone, an acute condition.
						

							
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Acute illnesses generally develop suddenly and last a short time, often only a few days or weeks.
	
Chronic conditions develop slowly and may worsen over an extended period of time—months to years.
	
 
						

							
Such medical conditions which occur suddenly and last for the brief period in the body, are said to be the acute disease. But the medical condition where the disease occurs slowly and last for a long time or sometimes for the entire life is called as the chronic disease
A disease marked by the sudden onset of symptoms is called as acute disease. This type of medical condition resolves quickly on their own or with mild medical treatment. An acute condition sometimes may be so fast acting and severe also that it gets difficult for the patient to survive.