Why are my fingers numb and swollen when i wake up?

Suspicious for CTS: Your symptoms sound suspicious for carpal tunnel syndrome. If its primarily the thumb, index, and middle finger that become numb that would support the diagnosis. Swelling can often be a symptom but also a cause. I urge you to see your family doctor to have this evaluated because if it is carpal tunnel, chronicity is not good and can be associated with diminished outcomes with treatment.

Nerve compression: Numbness of the fingers with swelling which is worse at night or present when you wake up is suspicious for nerve compression syndromes such as carpal tunnel syndrome. An evaluation by a hand surgeon with appropriate diagnostic testing can confirm.