(See How Catalytic Converters Work for more details.). Controlling the engine is the most processor-intensive job on your car, and the engine control unit (ECU) is the most powerful computer on most cars.
â¢ Accidental poisoning is one of the leading causes of GI ulcer disease. This can be from plants (for example, toxic mushrooms, castor beans, or sago palm), pesticide or rodenticide toxicity, chemical poisoning (often with ethylene glycol or phenol), or heavy metal poisoning involving zinc, iron, or arsenic.
Proguanil (Paludrine) can cause nausea and simple mouth ulcers. Chloroquine (Nivaquine or Avloclor) can cause nausea, temporary blurred vision and rashes. Patients with a history of psychiatric disturbances (including depression) should not take mefloquine as it may precipitate these conditions.