Acupuncture therapy has a cumulative effect, so it is possible to feel some relief after the first treatment but it usually takes more than a few treatments. It is important to consider three things;
- The type of injury,
- The duration of the injury
- The pain level
If your condition is only a few days old, and only muscular without any tear, one or two treatments should provide some relief.
If your injury is caused by physical activities and/or you continue the same pattern after your acupuncture treatment, then the effect of a treatment is going to be minimal and it is going to take time to overcome the pain and the injury.
There are a lot of factors affecting the relief and the time it takes to get there.