Eyebrow is not affected by telogen effluvium. Please send photos using online consult option for proper examination diagnosis and treatment. This may be alopecia Areata and if not treated, it may cause bald spots.

Hair loss is a progressive problem and if not tackled in time tends to keep worsening over time. There are various causes of hair fall. Read my health feed for a better detailed understanding. https://fit.practo.com/#!/content/28405 After reading this I hope you will be convinced that a proper thorough examination of your scalp from a qualified dermatologist will be advisable for a fruitful outcome. There are various treatment options available for improving hair loss- apart from medical management other supplemental procedures like microneddling and PRP which can be used to achieve good results. Get an online consult or meet a dermatologist directly for a proper evaluation of the condition. Hope this was helpful.