Neurological Disorder
You suffer from one of several neurological disorders that cause tremors, involuntary movements, facial contortions, etc. Point value depends on severity:
Mild: Your condition is obvious to anyone who observes you for more than a few seconds. You are at -2 to tasks that involve fine manipulation (see High Manual Dexterity), and such tasks take twice the normal time. You also have -2 to social skills such as Acting, Leadership, Performance, Public Speaking, and Sex Appeal in any situation where your condition would be apparent (GM's decision). -15 points.
Severe: You find it difficult to function in normal society. You are at -4 to tasks that involve fine manipulation, and such tasks take four times as long. Your DX and Basic Move cannot exceed your racial average (DX 10 and Move 5 for a human), and might be lower. You get -4 to social skills whenever your condition becomes apparent. -35 points.
Crippling: You find it almost impossible to function in normal society. You are at -6 to tasks that involve fine manipulation, and such tasks take six times as long. Your DX and Basic Move cannot exceed 80% of your racial average (DX 8 and Move 4 for a human), and might be considerably lower. You get -6 to social skills most of the time. -55 points.
Many other symptoms are possible, including gross motor impairment (buy down DX or Move), involuntary vocalizations (treat as Noisy), and facial contortions (reduce appearance level; see Physical Appearance). Violent tics and profane involuntary vocalizations might qualify as Odious Personal Habits.