Answer:
The type of diagnosis that begins abruptly and severely is typically referred to as "acute."
-Acute
Acute conditions or diagnoses are characterized by a sudden onset of symptoms that are typically severe and intense. These conditions often develop rapidly and require immediate attention or intervention. Examples of acute conditions include acute infections, acute injuries, acute pain episodes, acute illnesses, or acute exacerbations of chronic conditions.
In contrast, chronic conditions are characterized by long-lasting, persistent symptoms that develop over time and may require ongoing management or treatment. Chronic conditions tend to have a slower onset and are typically not as severe or abrupt as acute conditions.