How to Increase White Blood Cells. Leukocytes or white blood cells typically make up 4000-10,000 WBCs for every microliter of blood. If your white blood cell count drops below 3500 WBCs for every microliter of blood it causes a condition called leukopenia that causes cramps, fever, sore gums, diarrhea, sneezing, headaches, sore throat, etc. These are signs that your immune system is weak and you are susceptible to infection.
General Information. 1  Schwannomas are benign tumors of the nerve sheath that grow slowly and push nerve fibers aside. 2  Schwannomas can arise from any peripheral nerve containing Schwann cells, including cranial nerves. 3  The eighth cranial nerve is the most susceptible to schwannomas.
Other causes include: 1  a pituitary gland tumor in which the pituitary gland releases too much adrenocorticotropic hormone, which is also known as Cushingâs disease. 2  ectopic ACTH syndrome, which causes tumors that usually occur in the lung, pancreas, thyroid, or thymus gland. 3  an adrenal gland abnormality or tumor.