It's crucial to prioritize the safety and well-being of others if you have genuine concerns about someone's intentions to harm themselves or others. However, the appropriate course of action can vary depending on your location and local laws.
In many places, mental health professionals have a legal and ethical obligation to maintain confidentiality regarding their clients' information. As a result, contacting a therapist directly without the client's consent may not be appropriate or legally permissible.
If you believe that someone is in immediate danger, you should consider reporting your concerns to the appropriate authorities. In many countries, there are hotlines or crisis helplines that you can call to seek guidance on how to handle such situations. They can provide advice and connect the person in question to professional help if necessary.
Additionally, you may want to encourage the individual to speak with their therapist about their concerns directly or involve someone they trust to support them in seeking help.
Remember, the situation can be delicate, and it's essential to approach it with sensitivity and care. Always prioritize the safety and well-being of the individual involved, and seek guidance from professionals or authorities who are experienced in handling such situations.