Yes! My lovely friend was dismissed with 'psychological reasons' despite coughing up blood in large amounts, frequently and repeatedly. Turned out she was hemorrhaging into her lungs with a rare condition. Ended up with a long hospital stay and multiple organ failure.
Boyfriends mother AND grandmother were told by the same GP their stomach ulcers were psychosomatic. After his mother's imaginary ulcer ruptured (after several years of huge pain), they fortunately immediately saught a second opinion when the grandmother was fobbed off with exactly the same symptoms by the same person.
My mother had a minor operation without any anasthetic, due to a mix up and no one believing her that she hasn't had pain relief and could feel everything - they were cutting out an inch deep section of infected tissue. She was also told they would not check a skin graft site after a major operation as 'it is going to hurt I'm afraid' - huge infection which lead to isolation and a month long hospital stay. They wouldn't even check the wound. She is a woman who has broken multiple bones, had long term illness, many infections and operations. Nope, didn't trust her knowledge of her own pain.
I know so, so many women who have been told their pain is all in their head.