Jon Histamine Intolerance is a methylation issue due to too many toxins coming from the gut blocking detox. (Diamine oxidase (DAO)) is the name of the inhibited histamine metabolism.
To remove histamine and other toxin "amines" from the body do a Epsom Salt bath or a coffee enema with warm coffee and hold it for 15 min lying on your right and left sides. the coffee enema is better to me because it increases glutathione production. the reason why you malabsorb food is because you had loads of candida and that means you have leaky gut. leaky gut is inflammation and the gut cant absorb when its inflammed. remove all common allergens like eggs,yeast,beans,seafood, and eat brown rice or even better eat sweet potato because its softer on the gut lining. take digestive enzymes with every meal and flood the body with probiotics and soil based probiotics since they travel through the whole digestive tract. the stomach tension anxiety could be pancreas/liver aching from Sugar or from what you ate(food intolerance) because when you have leaky gut you get liver issues/pain due too all the food debris in yoyur blood stream going straight to the liver to be detoxed. you could also have vitamin deficiencys causing anxiety due too not absorbing food. lyme disease is caused by borreliosis which is a bacteria and its pathogenic just like candida so when you have all these pathogenic toxic bugs in your gut their metabolism screws up histamine detox and other important metabolic functions. kinda sucks..... best of luck and much prayers to you man...
ps check out this website
you COULD also be a pyroluric. pyrolurics have anxiety in their gut and its caused by candida ect... so check it out.