I have a medical condition that has remained a mystery in spite of years of specialists and tests. I am unable to be in any sunlight, including through windows. When the symptoms are very mild I get dizzy, I can’t think clearly, and my skin prickles and itches. I sometimes break out in welts, kind of like mosquito bites that leave bruises behind when they disappear. In the more severe reactions these welts can become extremely large, 4-5 inches or larger. In the worst reactions I can go into a kind of stupor and lose my ability to move. One time I actually stopped breathing.
For some reason the frequency of my exposure seems to intensify the reactions. The only way to stop this is to stay out of all sunlight most of the time. Then I can handle the occasional trip to the doctor or dentist, etc. As long as I’m not the one driving!
The most practical solution we have found is for me to sleep in the daytime. My bedroom has several light blocking layers on the window. During the summer it isn’t dark when I get up in the evening, but we have very good shades and heavy curtains in the main part of the house. It isn’t as light proof as my bedroom, but I’m fine for a few hours. I just stay out of the rest of the house until it is dark. Then I am free to go wherever I want!
Every morning before I go to bed, I let myself have one good look out the window in spite of the sunlight. That is when I see the little sparrows hopping and chirping in the trees outside. They always make me smile.
The Nocturnal Sparrow 