Yes, I meant horizontal bumps.. and injury can be a cause.. but there are more causes.. like hormonal changes, some sicknesses, others..
I've had this.. well, assumption really.. that needs questioning.. The assumption (or question thus) here is: Is there a correlation between getting bumpy thumb nails and mood phases? A bit wild maybe.. but when I've had a couple of serious depressions before the bumpiness of said nails were there too.. quite apparently or clearly there..
Well, been a bit 'on and off' depressed the last two months (not big time) and yeah.. the hor. dents/bumps are back..
Um, I have a loooong history of studying my (or other one's) hands and normally they're 'flat' (ok).. it just got me wondering a bit.. (not concluding anything yet though)
.. well, useless facts.. right?
*Hey, too late.. edit.. Thanks for the links, Jack. (look 'into' them)