Chronic is the word that describes an illness/disease that is either incurable or something that has to run it's course, whether long term or recurring.
Chronic diseases.
Some diseases last for a short period of time and/or come on very quickly. These are called Acute Diseases. eg Chest Infection Others last for a longer period of time and/or come on gradually over a long period of time. These are called Chronic Diseases eg - Arthritis
They are said to be chronic diseases; these may last years, even as long as the life of the patient.
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acute
most last a long time but the time depends on the size of the candles
There is no time limit on how long a drought can last.
Sustainably means using it carefully so that it will last a long time.
a long time
Gold last for a long time because it is durable. Gold jewelry will last for a long time when it is made purely of gold.
how long does 15mg Adderral last
I have heard that Kids Schetchers and DCs last a long time. I know from experience that Dcs will last a good amount of time.
A very long time.