Hand cramping can occur for many reasons and cause significant discomfort in some people. Often, hand cramps are caused by muscle spasms, which are described as an uncontrollable or involuntary muscle contraction. These spasms or contractions do not allow the muscle to become relaxed and can become excruciating in some cases.
Serum levels of prolactin may increase as a consequence of epileptic seizures. The hormone release is caused by the propagation of epileptic activity, usually from the temporal lobe to the hypothalamic-pituitary axis.
These high prolactin levels are often caused by prolactinoma, which causes a tumor to grow on your pituitary gland. This tumor then excretes excess prolactin in your body. Rarely, liver disease, kidney disease, polycystic ovary syndrome (PCOS), shingles or hypothyroidism may cause high levels of prolactin.