> ## Content Index > Fetch the complete content index at: https://www.mikebakerhq.com/llms.txt > Use this file to discover other available public pages before exploring further. # A Father's Guide to Endometriosis - URL: https://www.mikebakerhq.com/endometriosis/fathers-guide/ - Published: 2026-09-23T10:16:03.000Z - Updated: 2026-10-03T06:30:26.000Z - Description: What a father needs to know about endometriosis when his daughter or his wife is the one in pain: what the disease is, why it takes years to name, what belief looks like in practice, and where to start today. From the dad who wrote the book with that subtitle. - Author: Mike Baker - Tags: Endometriosis, Human First My daughter Sammie was hurting, and I did not know what to do with the feeling of watching someone I love suffer while knowing I could not take the pain away. That is where this started for me. Not with a diagnosis, and not with a book. With a father standing in a hallway wanting a plan and not having one. I have spent twenty-seven years in community healthcare. I run a health center. My wife, Kellie, lives with endometriosis, and so does Sammie, and it still took two years from the first time Sammie said something was wrong to the first time anyone wrote the word down. If a family with a health center CEO in it can lose two years, I promise you the problem is not that you did not try hard enough. This page is the version of what I know that fits on one screen. The longer version is a book. But you should be able to get the important parts free, tonight, without buying anything, so here they are. ## What endometriosis actually is, in plain words Tissue similar to the lining of the uterus grows where it should not, on the ovaries, the bowel, the bladder, the lining of the pelvis, and sometimes further. It responds to the menstrual cycle the way the uterine lining does, but it has nowhere to go. That causes inflammation, scarring, and pain that can be severe during periods and, for many women, at other times too. It can affect fertility. It can affect the bowel and bladder. It can make sex painful. It is chronic, and there is no cure, though there are treatments that help. The World Health Organization estimates it affects about ten percent of women and girls of reproductive age, roughly 190 million people. It is common, and it is badly recognized, which is a different thing from rare. The single most important fact for a father is this one: pain that keeps a girl or a woman home from school, from work, or from her own life is not normal, and it should never be treated as the price of having a uterus. The EndoDad Letter · From a dad who believes you Every week, one useful thing for living with endometriosis, plus a short piece to pass on to the people around you. Free, and it opens the Resource Library. Email address Send me the next one You’re in. Check your inbox to confirm. ## Why it takes so long to get named The WHO puts the average time from first symptoms to diagnosis at four to twelve years. A French cohort of nearly seven thousand patients published this year found ten. The UK's largest survey, 3,075 women, published in March 2026, found nine years and four months, and the number is getting worse, not better. Eighty-three percent of those women said they had been told their symptoms were normal or had been dismissed. Part of the delay is the disease. Symptoms vary and overlap with other things. Part of it is the old rule that a diagnosis had to be confirmed surgically, which meant a family doctor could suspect it and still not be able to say so. In March 2026, the American College of Obstetricians and Gynecologists changed that rule. Its new guidance says a clinical diagnosis, based on symptoms and examination, is enough to begin treatment. I wrote about [what that change means inside a clinic](https://www.mikebakerhq.com/endometriosis/acog-2026-diagnosis-guidance/), and I put the full [numbers on diagnostic delay](https://www.mikebakerhq.com/endometriosis/diagnostic-delay/) on their own page. And part of the delay is belief. The largest multi-country study of where the years go, across sixteen centers in ten countries, found the delay concentrated in primary care, in the room where a woman first says the words out loud. Every year of that is a year of her being told it is stress, or her diet, or her imagination. ## What a father is for I am not a doctor, and I am not a woman living with this. Women living with endometriosis are the experts on their own bodies. My job is different. My job is to be the person she does not have to convince. That sounds passive. It is the opposite. Here is what it looks like. Believe her the first time. Not after the ultrasound. Not after the third doctor. The first time. The cost of being wrong in that direction is almost nothing. The cost of being wrong in the other direction is years of her life. Keep the timeline. Dates matter more than anything else you can bring to an appointment. When it started, how it changed, what was tried, what each clinician said. She has told the story so many times it has worn smooth. Write it down so she does not have to reconstruct it under pressure. Go to the appointment, and know your job there. A 2026 UK report contains a woman who said doctors only started listening when she began bringing her partner along. That is a terrible fact about medicine and it is also a job description. Be in the room. Add what you have witnessed. Ask what happens if "wait and see" does not work. Do not speak for her. I wrote a whole page on [what to do at the appointment](https://www.mikebakerhq.com/endometriosis/at-the-appointment/). Reduce her decisions on bad days. Handle the ordinary things you can already see need handling. Ask one clear question, "help, company, or space," and take the answer. Learn on your own. Every explanation you require from her is work she has to do while hurting. Reading this page is the right instinct. Keep going. Take your own feelings somewhere that is not her. Watching your kid hurt takes something out of you. It should. But she should not have to comfort you about her own disease. ## If she is a teenager Everything above applies, and a few things are sharper. Painful periods are common in adolescents. Periods that keep her out of school are a symptom, not a phase. ACOG's guidance for adolescents has said for years that at least two thirds of girls with pelvic pain that does not respond to standard treatment turn out to have endometriosis at surgery, and the March 2026 guidance now applies clinical diagnosis to adolescents as well. I wrote a separate page for fathers of teenagers, [My Teenage Daughter Has Painful Periods](https://www.mikebakerhq.com/endometriosis/teenage-daughter/), because everything else on that subject is written by children's hospitals and none of it sounds like a dad. ## If she is your wife The disease does not stop at the exam room door. It is in the plans that change, the trip you are nervous to book, the heating pad at two in the morning, and the long stretch of ordinary days between flares where the marriage actually lives. I wrote [How to Support Your Wife With Endometriosis](https://www.mikebakerhq.com/endometriosis/support-your-wife/) as the husband who got most of it wrong first, and an earlier essay on [what to say when you cannot fix it](https://www.mikebakerhq.com/writing/what-to-say-when-your-wife-is-in-pain-and-you-cant-fix-it/). ## Where to start today Send her the [I Believe You](https://www.mikebakerhq.com/ibelieveyou/) guide if she is the one in pain. It is private, it lives on her phone, nothing comes to me, and it turns what she is feeling into words a clinician can act on. Print the [Appointment Preparation Sheet and the Symptom Timeline Builder](https://www.mikebakerhq.com/advocacy/) and fill them in together on a good day. They are free. If you are the one who needs to understand, and explaining it again is exhausting her, the Believe Her Conversation Guide on that same page is written to be sent to you. Read it before you talk. If you want a specialist, the Endometriosis Foundation of America and iCareBetter keep directories. I am careful about where I send people, and I trust both. ## The book I wrote [Believe Her the First Time: A Father's Guide to Endometriosis, Pain, and Showing Up When It Matters](https://www.mikebakerhq.com/books/believe-her-the-first-time/) because I love my daughter and I did not know what to do. It opens with how Sammie's experience changed me, looks at what the disease takes from a life beyond the symptoms, spends its practical half on how men show up, and ends with the bigger fight over research, healthcare, and why women should not have to become warriors to be believed. Sammie wrote the foreword in her own voice. It is the best thing in the book. Chapter one is free to read on the book page, and there is a free companion workbook you can print. You do not need the book to be a good father to a daughter with endometriosis. You need to believe her, keep the timeline, show up in the room, and take care of your own fear somewhere else. The book is there for the nights when you want more than a web page. Nothing here is medical advice. It is what a father learned the slow way. For diagnosis and treatment, work with a qualified clinician. Sources for the figures on this page World Health Organization, Endometriosis fact sheet, 15 October 2025\. Endometriosis UK, "The State of Endometriosis Care in the UK," 2 March 2026 (3,075 respondents). Breton Z et al., ComPaRe-Endometriosis cohort, Journal of Women's Health, February 2026\. ACOG Clinical Practice Guideline No. 11, "Diagnosis of Endometriosis," Obstetrics & Gynecology, March 2026\. ACOG Committee Opinion No. 760, "Dysmenorrhea and Endometriosis in the Adolescent," Obstetrics & Gynecology, December 2018\. Nnoaham KE et al., Fertility and Sterility, 2011.