Hi Laura! I feel your pain! Mine developed in September 2015, and I am nearly at 12 months of suffering! I can totally empathise that most people have no idea how much this illness affects your life, relationships and mental health. Like you antihistamines initially worked but now don't seem to make a difference, I've also had a few short courses of steroids which gave me 1 weeks relief initially, then with each course decreased and always felt they came back with vengeance! I am currently on 4x fexofenadine (180mg), 2x mantelukaust (10mg) and tranexamic acid x3 (500mg) as and when needed for swelling. Despite all this, I have hives everyday and big flare ups around my period. These were prescribed by an immunologist I saw privately.
I started an elimination diet (RPAH) back in May after reading up about chemical sensitivity (initially Salicylate sensitivity after the immunologist have me a hand out about it saying it's common in people with chronic spontaneous urticaria). It is a mine field with a lot of reading to do and the elimination phase of the diet was very restrictive and tough! I also had to eliminate any household/beauty products that contained the known irritants- salycilates, glutamines, sorbates, sulphites and natural/synthetic colourings/flavourings. I was washing my hair with bicarbonate of soda! I looked rough! Haha!
Anyway it took 2 weeks for symptoms to die down, by the third week I was down to 5 hives a day which is the best I've ever been! I felt I was getting somewhere! I started the challenges where I reintroduced dairy, wheat and eggs with no issue. However I then turned 30 and was having a big celebration, my plan was to break the diet but be sensible then go straight back. I didn't do it though, unfortunately I was desperate to feel normal and totally overloaded on booze party food and carried on like this for a week! Just as it took time for hives to go down, it took a week for the flare up to build. And since then it's been out of control again. I'm gutted I didn't follow through with the diet as it's the closest I'd been to feeling great in ages!
I have started again and plan to do the whole thing properly which takes about 3 months. For me I feel it's worth it because I know it was arming, confirming for me that food chemicals and other chemicals in products were the main issue as well as stress.
You may want to look further into diet/chemicals as if you are sensitive they will all add up to tip you over the threshold. And unless you do an elimination it's virtually impossible to tell what's causing the reaction or if it is indeed food/chemicals.
I read a lot on the fed up au website and joined their Facebook page. I also have a link to the diet if you wanted me to share it with you.
I know nothing about alkaline drops and like so many people on here am baffled by what triggers this thing in the first place. Sorry much help there!
But the main thing is surviving through this without it getting the better of you and that can mean a lot of reading/research/testing, patience, self discipline and self care.
I hope you know you're not alone and that everyone here knows what a nightmare this is, I'm hoping you find the strength and support you need to get your resolution.
Best Wishes X