Final answer:
The severe cramping in the patient is likely caused by electrolyte deficiency due to excessive sweating.
Step-by-step explanation:
The most likely cause of the severe cramping experienced by the patient is electrolyte deficiency due to sweating too much. Excessive sweating can lead to the loss of important electrolytes such as sodium, which is crucial for proper muscle function. When the body doesn't have enough electrolytes, it can result in muscle cramping, spasms, and other symptoms described by the patient. In this case, it is important to address the electrolyte imbalance and replenish the lost electrolytes through appropriate medical intervention.