Can a head tic were you twitch cause any complications like forgetfulness, bumps on head and occasional headaches and fatigue or is this brain cancer.

No.: forget cancer, much too rare. Examine possible side effects of any medications you are on--particularly antidepressants and sedating antihistamines. They also may cause fatigue and fuzzy memory. Ask if there is a family history of tics. If you are taking a phenothiazine antihistamine, get off it, as this side effect can become permanent.