I'm currently preparing for ATCL exam, and I have been practising about one and a half hours a day.

Recently I start to feel pain in both wrists when I am practising piano, and also when I am not. The pain becomes more serious when I shake my hand.

What would be possible causes of this kind of pain? Do I need to provide more details? Thanks.

Update:

Pieces list:

- Bach - Toccata in E minor, BWV 914
- Mozart - Piano Sonata No.11 in A major, K.331
- Debussy - Général Lavine – eccentric: Dans le style et le mouvement d'un Cakewalk
- Bartok - Suite Op. 14