For your benefit, I have put together a list of resources to check out for more information on Reflexology and its benefits.
Here is a recent study from a controlled trial which found that reflexology significantly improved resting and active pain in patients: https://www.liebertpub.com/doi/10.1089/acm.2017.0167
Another study showing reflexology assisted in reducing pain in patients with diabetic neuropathy compared to patients who did not receive reflexology: https://www.ncbi.nlm.nih.gov/pubmed/24527055
Clinical study showing PMS symptoms improved with hand, foot and ear therapy: https://www.ncbi.nlm.nih.gov/pubmed/8233263
Clinical study on plantar fasciitis: https://www.correcttoes.com/foot-help/wp-content/uploads/2018/12/Plantar-Fasciitis_Lemont-et-al.pdf