### Patient: Doctor, I have been experiencing some strange symptoms lately. I feel like I'm having allergic reactions, and I'm also having muscle cramps, contractures, or spasms. And I'm having frequent headaches as well. What could be the reason behind these?
### Doctor: Well, based on the symptoms you described, it seems like you might be suffering from a Vitamin B deficiency. This deficiency can lead to allergic reactions, muscle cramps, contractures or spasms, and headaches as well.