What are some signs that a therapist may have poor boundaries with their clients?

Frequent phoning or texting of clients to “check up on them and make sure they’re OK.”

Struggling with fantasies of deeper connections with clients, whether sexual or parental or other intense or intimate relationships beyond psychotherapy.

Serious disappointment when the client cancels a session.

Is it common for female doctors to examine male patients without another nurse present? Is there a difference in protocol for nurses and physician assistants?

Sense of competition with persons who are important in the client’s life.

Off the top of my ancient head:

Session-expressed curiosities about client details not relevant to the therapy.

Does the National Health Service (NHS) in the United Kingdom diagnose rare conditions? If so, does it provide treatment for them as well?

Disclosing feelings, fantasies, and experiences to the client in ways not related to the work the client is engaged in.

General Introduction to Boundaries from Panahi Counseling:

Routinely going over the time limit with certain patients, compromising the time for the next client.

Molly Jong-Fast on Human Frailty and Unlearning Erica Jong’s Lessons - Literary Hub

Failing to mention the client in supervision/consultation, out of fear the supervisor/consultant will advise return to ordinary healthy boundaries.

Eager anticipation (or anxious anticipation) of the next session in ways that distract.

Obsessing about clients outside of work hours.

MIT Breakthrough: Star-Shaped Brain Cells Could Be the Secret Behind Human Memory - SciTechDaily

These items can happen fleetingly, briefly, in any therapy, but if they’re frequent, it’s definitely time for the therapist to get some good, solid supervision/consultation.