I came across this article by chance and I think that I have some personal experience of the types of symptoms that can occur as a result of eating potatoes.  I am a coeliac and dematitis herpetiformis (DH) sufferer.
There seem to be few articles about the potential side effects from eating the humble potato indeed my doctor, when I raised this with him, almost laughed and said 'there is nothing in potato other than carbohydrate' and put my symptoms down to a poor adherence with a GF diet (which is not the case). 
Following the abrupt and dramatic onset of my coeliac / DH symptoms and eventual diagnosis I followed a GF diet and those symptoms eventually disappeared.  Due to the challenges of finding GF food at that time in the area around where I worked I frequently (say 3 times a week) would have a jacket potato with cheese and beans for lunch (I was careful to check with the shop owner that the beans were GF and that there was a low risk of cross contamination).  I started to notice incidences of bloating and ‘digestive problems’ (flatulence and frequently needing to go to the toilet). I then progressively adjusted my regular order to see what would help: - having the potato without butter (in case there was some cross contamination with bread), no beans until eventually stopping having the potatoes and this sorted me out.  I then re-introduced potato into my diet and realised that this was definitely the cause.  When I re-introduced the potato I noticed that eating them sometimes had an immediate effect with my face and neck becoming ‘flushed’ reddened and a slight feeling of dizziness. 
It was after this when I raised it with my doctor who was very dismissive about the possible link.
I have generally kept my consumption of potatoes down to a low level and my stomach has calmed down until recently and I am in the process of trying to sort out which foods are causing my current relapse. 
I am very interested in what the trigger is for coeliac / DH and I have always suspected that there is a secondary agent that causes the body to tip over a threshold beyond which the symptoms suddenly present themselves i.e. a dose or chronic exposure.
Finally I have a very ‘left field’ observation which may be rubbish but I will say it anyway, that is: this whole potato episode corresponded with a period when my wife and I were trying to conceive a baby.  My wife undertook all sorts of tests which came up with nothing and we were just about to start the process of IVF.  Giving up the potato made me feel better but I am convinced there is some link to my wife successfully becoming pregnant at that time.