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I've only been bouldering (climbing) occasionally for the last few years. On one route, I had to support myself with one arm, which put a lot of pressure on my arm and right shoulder. During the movement, I suddenly felt a sharp pain in that area. My first thought was: "Damn, the load was too big, I've strained my muscles".
Shortly afterwards, however, I realized that it was just like every other accidental "injury" in recent years: the movement and strain were no different to dozens of similar strains before. The reason for the pain was therefore almost certainly that an SBS of the musculoskeletal system in the shoulder area had recently entered the conflict-resolved phase and a swelling/regeneration process had begun, as yet unnoticed, as a result of which the tissue temporarily became more unstable.

It was not possible to determine exactly whether the pain in the shoulder was most severe when moving forwards, backwards or upwards. It also radiated in part to the chest, arm and back. The position in which it felt particularly bad was when I bent my arm and lifted it upwards, as if I were holding someone in my arms. I had never had problems in this area before.

This time, I didn't have to think long to know what I had solved beforehand, because I was actually already expecting some symptoms to appear:
Two days earlier, my wife and I had started couple dancing again after a 10-year break due to having children.
We had actually wanted to start again for more than a year, but we just hadn't managed to get the necessary freedom back, which she and I found very stressful. So I related this to the arm/shoulder for holding/hugging my wife, as a "I can't do it" self-esteem break - so either as a right-handed person the partner side, or as a local reference because the partner is held with exactly this arm position when dancing.

I now knew that this SBS had certainly been subliminally active for more than a year and that it was now a gentle solution because we had been preparing for it for weeks and had arranged possible trial training sessions. The gentle solution was the reason for the slow and unnoticed onset of symptoms, which then only became noticeable through the stressful movement of bouldering (but even without the bouldering, the symptoms would have become noticeable and equally intense over the next few days).
Because of the long conflict-active phase, I was expecting at least 3 weeks of severe pain, possibly longer. In fact, the 3 weeks of severe pain worked out well, followed by another 3 weeks in which the pain slowly subsided.
Due to the precise knowledge of the cause and the estimation of the duration of the symptoms, there was of course no need for any examinations or medication - and I simply skipped physically strenuous activities a few times and gave the tissue the space it needed to regenerate.