Here's a few possible reasons why. I don't like heat, exposed to too much I could get ill and irrational from that. I'm experiencing something relatively new - these venesection therapies (phlebotomies), to reduce the amount of serum ferritin in my blood stream are of a regular fortnightly period - I've now had 3, but still adjusting to both during and after reactivities. I've recently been unwell. Bit snappy and aggressive towards others. And it could be linked into the genetics of the condition I have. Here is a list of possible symptoms I could experience (although the worst ones are less likely). http://www.haemochromatosis.org.uk/pages/symptoms.html I'm not trying to make excuses. The irritability could come from a number of sources. But it still bugs me that I could react badly to anything. Yes. I could do. But excuses wouldn't cover it. So before I get over the top - I am likely to point to this thread. I do apologise if I get aggressive at any point - if it is known to be out of character, then by all means - pull me up on it. I'm not going to allow myself to be riddle with "oh it could be this" - when I should know better.