Susan:
I have chronic rectal region pain that radiates and is sometimes worse in the lower back/coccyx region flaring to the buttocks/hamstrings and hips. Characteristic of chronic pain is its worsening by the weather-- typically I am more reliable than our local weatherperson about when it's going to rain!! I have been told by many specialists that the massive radiation I endured did significant damage to the tissue. They don't tell you ahead of time what severe damage radiation and chemo do, but had I known at the time, I still would have chosen to receive it... what choice did I have?
So, radiation/chemo damage to the tissues, together with the removal of lymph nodes and lymph channels can cause swelling of the legs as lymph fluid builds up. My oncologist was very blase about what caused the damage and severe pain. But after seeking MANY expert opinions, I was told it was the severe pelvic trauma I suffered (evidenced by my pain, inability to urinate, and inability to perform sexually despite ANY meds or therapy) together with the radiation and chemo damage. I don't believe that your daughter has been on other newer chemo agents right???... I think she has been on 5FU/Leucovorin mixture... not oxaliplatin and/or irinotecan. But in any event, I do believe she received radiation like is typical therapy with rectal cancer and chemo and removal of nodes, which can cause chronic pain and swelling.
Please make sure she knows she is NOT going crazy... After effects of cancer happen ALL THE TIME, but are seldom talked about. Also, pain is a subjective thing. Only SHE can say how much pain she has and whether she needs medication to help her live her life. She may experience more pain now, or five years from now... it's a common phenomenon. Should she require stronger medication, it should NOT be an issue given the fact that she is a cancer survivor. Unfortunately, other chronic pain sufferers who are not cancer survivors have to face other battles with getting appropriate medication therapy due to stigmas of abuse. Bottom line is, anyone who suffers from chronic pain often has to battle social stigmas and ignorance by people who are not educated on pain and believe that people become "addicts." There is NOTHING farther from the truth. Just like ANY medication, our bodies become physically dependent, but rarely do cancer survivors use stronger pain medication to "get a high." Most people in the medical profession are coming around, but you even find ignorance in the medical arena.
She may want to see a rehabilitation specialist who know that she is probably experiencing multi-focal pain where different types of meds are needed... anticonvulsants/anti-depressants for nerve pain and narcotic analgesics for trauma/surgical/lymphatic pain. All this is also referred to as "cancer pain." A rehab specialist will also be able to prescribe physical therapy which will help. The sooner she does this, the better. Without getting into a long explanation, it is believed that the longer nerve fibers receive and interpret ANY stimuli as painful, leads to ingraining in the nerve where this is ultimately the ONLY signal that is transmitted and received in the brain as pain.
I hope all this makes sense and I wish her the best of luck.
Regards,
CancerDad