The phrase "acute phase" refers to a short period of time when a condition or illness is at its most severe or intense. It's like the peak or climax of the problem before it gets better or improves. Full definition
However, there are special substances in the blood (acute phase proteins) that, in some types, can indicate whether a dog is more likely to survive for longer. (brittonroadveterinaryclinic.com)
Both stretching and strengthening exercises are important for recovering from calf strain injuries and can begin once the initial acute phase has passed and pain allows. (sportsinjuryclinic.net)
«The animal that responded to therapy had a broad, strong response during the early acute phase of infection. (sciencedaily.com)