Hello, I'm an 18 year old art student who has been having a lot of trouble with the thumb on my dominant hand. It often gets swollen and tense, making movement slow and difficult. It's currently not painful but it's hard to hold things since it feels like I can't put a lot of pressure on it. Sometimes it gets bad enough that it's painful to hold a pencil. This makes it very difficult to do my work since I'm constantly working on new projects. Sometimes it lasts a few days or longer.