It has been reported that some patients have been misdiagnosed with Pseudotumor Cerebri, when in fact the correct diagnosis in their specific case was Malignant Brain Tumour (cancerous).
Malignant brain tumor is an growth of abnormal cells in the brain that are cancerous. They can be caused by a vast array of cancer types. Symptoms of brain cancer include a new onset or change in pattern of headaches, more frequent and severe headaches, nausea or vomiting, vision problems, gradual loss of sensation or movement in limbs, difficulty with balance, fatigue, seizures, personality or behaviour changes and hearing problems. With such a broad range of symptoms brain tumors can be easily misdiagnosed as conditions like migraines, or multiple sclerosis.