If you want state-of-the-art understanding, consult a professional who has the experience and the resources to synthesize for you the latest thinking on the subject. Google can often be helpful in this regard. You can look for the prominent health institutions in your country and their work on the subject.
Anything that makes you feel "unwell," if left alone to fester chronically over time can injure you long-term. "Stress" that we feel is the BODY speaking to us, so yes, stress can injure and harm permanently if left unchecked.
Anything that makes you feel "unwell," if left alone to fester chronically over time can injure you long-term. "Stress" that we feel is the BODY speaking to us, so yes, stress can injure and harm permanently if left unchecked.