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.
Causes of Schwannoma. Causes of Schwannoma. The exact cause of a schwannoma is not known, although the inherited genetic disorder, neurofibromatosis, is a risk factor for developing a schwannoma. Schwannoma: Related Medical Conditions. Schwannoma: Causes and Types.
Keyhole Brain Tumor. Animation | Play Video. These tumors are typically benign and arise from the nerve sheath (covering) of cranial nerves along-side the cerebellum and brainstem. The most common schwannoma arises from the 8th cranial nerve (the vestibulo-cochlear nerve) or the 5th cranial nerve (the trigeminal nerve).