These are mainly caused by midline posterior fossa tumor --> Medulloblastoma.Headache                                                    o Nausea                                                  o Drowsiness Vomiting (usually in the morning)         o Personality changes                         o Papilledema Diplopia / blurred vision                           o IrritabilityNote - Brain-stem tumors are also posterior fossa tumors, but they do not present with increased ICT.">