My nan woke up with a really swollen left hand, it's been like it for about 4 hours. What could be wrong?

Question

My nan woke up with a really swollen left hand, it's been like it for about 4 hours. What could be wrong?

Answer 1

She needs to see a doctor.  Most likely it is a bug bite, but it could also be a fracture in one of the bones of the hand (depending on her age and bone health) or it could be any of a number of other problems that only a doctor could adequately diagnose.

Answer 2

Insect bite.

Answer 3

You might want to have that checked out. It might be a blood clot. Or it could just be asleep.