I have seen dynamics between children and adults. adults and adults, children and children and even people with their PETS where it is obvious to everybody it is 'psychosomatic' , that is, serving a purpose of a distraction from repressed emotions. Sarno said it was a 'cradle to grave' disorder and that anybody capable of generating emotion is capable of getting it.
I worked at schools from 2005 to 2012. Modern Day child rearing has gotten so ridiculously distorted and impregnated with fear and techno-neglect, I would be surprised if there was NOT a tidal wave of new 'real' symptoms that never get diagnosed. Witness the new "I am allergic to EVERYTHING" people at your local Whole foods and their very very special dietary needs...and the results if they eat 'regular food'....these people "Munchausen By proxy" that crap onto their kids. "Oh Joey can't eat eggs... He gets so listless when he eats gluten... Maria is allergic to nightshade and tomatoes". Their is a 40-75k a year school by me that has custom meals cooked for each child.. The wealthier they get the sicker their kids are..But nobody seems to notice????
The average kid nowadays is thrown in front of a screen young.. I see toddlers on Iphone type of game devices. Go to any local playground and look at the parents with their noses buried in their phones.....or driving. Mammals crave interaction and love and it is becoming the rarest commodity. ...
..and the Fear that is broadcast over TV and then regurgitated in every day speaking. There is NO way this is not affecting kids. Most of the young Men I come across (18-22) are like palace Eunuchs. They have grown up in the midst of plenty and wealth and abundance but have zero real life experience because they were 'protected' and dropped off at school instead of walking home and are terrified there might be a peanut in the cookie. Wear masks because we are all gonna DIE! Don't touch anybody and don't let anybody touch you. Get your shot. Don't hang out with the wrong people. Wear a helmet...etc.
..and that's why most people won't digest the concept and it is so much easier to take a pill than do the work... because the truth will set you free, but they are afraid of the silence and the loneliness. Oh, they might embrace it on the surface and post about it on twitter, but they will go to the allergist before they will look at the details of their life.
Anytime I have an anything of a symptom the first question I ask is "Why do I need this symptom?" . If your friends twins need them, that could open up a whole can of angry...at you for being the messenger !!!!
But fear and neglect are 'waves' that are broadcast....and the signal keeps getting stronger. Your friends twins are growing up in this normal, and unless they are extreme outliers, it is their reality. Of course they will have a 'something'...maybe lots of somethings.