Signs and symptoms depend on the type of poison, and can include:
- bite or injection marks, with or without local swelling
- burns around and inside the mouth or on the tongue
- smell of fumes
- odours on the breath
- burning pain from mouth to stomach
- nausea, vomiting
- abdominal pain
- difficulty in breathing
- tight feeling in chest
- headache
- ringing in ears
- blurred vision
- blue lips, face, earlobes, fingernails
- drowsiness
- loss of consciousness
- seizures
