Ever since about 2010 I have been struggling with this itch which occurs when I come into contact with water. If I have a shower I can be guaranteed an unbearable itch within 5-15 minutes which will last anywhere from 30-120 minutes.. With baths the itch tends to be less severe, though oddly my thighs and forearms will often be the itchy only parts.
It occurs after hot water, cold water, hard water, soft water (my uncle has a water softener installed), sea water, river water. I have done the obvious and changed all of the products that I use, from shampoo, to shower gel, to washing detergent in case it is the towel when I dry.
I have tried different ways of drying, from towel drying, to air drying, to hair drying my whole body. With the air drying, I tried using no products in the shower and then air drying to see if anything was causing it, and I still got very itchy soon afterwards.
I have tried shower emollients, bath emollients, applying cream before washing, applying cream after washing, antihistamines of all shapes and sizes, and at one point was taking 4x180mg fexofenadine a day as prescribed by a private gp, but all to no avail.
To add to it, if I get too hot in the nighttime and I sweat then I, generally only my legs, get really itchy again. And when I said unbearable itch earlier, I mean to the point where, at its worst, I start writhing and itching and punching my own body where the itches are. It feels as if something is clawing at my skin from the inside. It's truly, honestly unbearable.
I have done a whole load of reading, as one would in this situation, and have always been pointed towards 'Aquagenic Pruritis'. I have tried vitamin D supplements and tried getting a lot of sun some years to see if it helps (again the Vitamin D idea) but again, all to no avail.
I should mention too: there is no redness. My skin looks completely normal when it is feeling itchy.
Side note in case anyone wants more info: I am extremely dermagraphic (according to the gps I have seen).
Any suggestions or thoughts, anyone? I will try anything at this point. A quarter of my life has been ruled by this and I would love to nip it in the bud, relative to a lifespan at least.
Please, and thank you!
Chris.