In answer to your question yes you can have telogen effluvium after otoplasty or any procedure for that matter. In general, telogen effluvium occurs more commonly after general anesthesia and it occurs typically 6 weeks to 3 months after an inciting event. It is typically self limited, reverses, and can be improved with minoxidil or rogaine. Please see the web link and video regarding telogen hair loss.
Dr. Sam Lam