FFS Friday - Heh

For someone who's intelligent I can be incredibly stupid at times. 
It happens more than I care to admit.
Here's a brilliant example:
I have sensitive skin. I'm particularly sensitive to sunscreen. I can't use sunscreen on my lips and there are only a few that I can use on my face. 
A few months ago I started using a new facial sunscreen. It didn't irritate me so I thought it was okay. 
Little did I know. 
I started getting really, really tired. So tired that my eyes stung and I could barely keep them open. I tried every natural method I could think of, copious amounts of coffee etc but nothing worked.
After about five weeks I went to the Dr who did a pile of blood tests and everything came up normal.
Despite my begging he refused to give me speed or other stimulants, so I took a look at my diet. I noticed that the fatigue set in around 9am, so I experimented with different breakfasts, but nothing changed.
I went to a naturopath but she couldn't help either. I was lost. 
One day I was having a home day so didn't use any skin care and I felt great all day. You know what's coming don't you?
It was then that I realised what the problem was. My sunscreen. Yep. I kid you not. 
The sunscreen was getting into my eyes and irritating them, which is why I could barely keep my eyes open!
As soon as I stopped using the sunscreen I was back to normal. Pity it took me two months of daily struggle to figure it out.
Heh. I'm so clever. 
I wasn't brave enough to go back to the Dr and tell him what had been causing my fatigue. Thankfully he hasn't asked. How embarassment.