Sudden rigid tendon in toe

This past year there have been at least 5 instances when my 2nd toe would suddenly “contract” and I could feel the tendon throughout the foot and toe get extremely tight.
It was very painful and my toe looked ‘bone’ straight–almost as the the toe was trying to arch the other way.
A couple times this happened after I put an odd amount of pressure on a certain part of the bottom of my foot.
Just last night, however, I was laying in bed and this happened with my big toe.
The entire toe tensed up and was perfectly straight–the joint was contracting downward.
This caused great amounts of pain through even my lower ankle area.
I looked up info on it, and nothing seems to fit my random occuring symptoms.
I thought I would see if anyone had any ideas, though.
Thanks.