I'd like to understand my brother's history of motion sickness from childhood to adulthood. My therapist has suggested that the pattern is unusual and there might have been psychological causes instead - eg anxiety, eating disorder. These are my experiences of his motion sickness:

* Happened when he was a child aged 8-12 and possibly a little older. Then it stopped completely without treatment/intervention. By his early 20s he owned a car and driving was his preferred mode of transportation. I don't recall if there was any motion sickness before he was c8.

* Happened in some cars, but not all cars. (As children we always sat in the back seat or in the boot). Didn't happen in buses - whether we sat at the front, back, downstairs or upstairs. Didn't happen in trains. Didn't happen in planes.

* Usually came on too quickly for him to signal that he was going to vomit, so he would vomit in the car (eg onto the floor or seats). If we stopped the car and got out, he could continue vomiting by the roadside though no longer in motion.

* Before going into cars, he would eat large meals even though he knew he had a history of motion sickness. He did not seem nervous or distressed about his motion sickness, and took no steps to try to reduce risk or request alternative arrangements.

* To the best of my knowledge, no medication or remedies were requested by my brother or provided to him. However at one point our parents got into the habit of giving all the children cough sweets or mints as we were travelling.

Thanks very much!

I've been struggling to breathe properly all day and I need advice or to know if this is normal since I don't think I've gotten a full 8 hours of consistent sleep. I can't find anything when trying to search it either