What are the early signs of the brain cancer?

Varies: Many times tumor in the brain does not give you any symptoms until it reaches certain size or if the tumor is located on particular area in the brain. The symptoms can include-persistent headaches-worse in the morning -associated with nausea, vomiting.Seizure, dizziness, gait imbalance, weakness/numbness on one area or one side of the body, slurred speech etc. It depends on the location and size.

Varies with site and: Brain tumors may be asymptomatic at an early stage. The signs depend on the location of the tumor and type of tumor. The signs may be behavioral change, seizures, difficulty in motor and sensory systems, headache, vomiting, visual problems and lots of other things.