Unless it's a sunburn(or other minor skin infections), the stuff mentioned in the wiki is WAY more severe. Did you fall on your hands recently? traumas may cause this too.
Anyway, does your skin come of looking like:
1. small round or quadrangular lentil sized pieces (this one is unlikely, since it usually indicates a hereditary disease that should've kicked in in childhood)
2. small bran like pieces (more likely, there are several skin diseases that cause that)
3. plates (these may be as large as a knee or elbow, but can be very small too) (again mostly hereditary, CAN be an indicator for auto-immune diseases)
4. leaves (no idea what causes that form, I'd have to look that one up)
Also another thing that causes it (i doubt that it's the cause in your case though) are acarians (mites).
