Snakebites may leave behind redness, swelling, bruising, blistering or puncture marks at the site of the bite. The area is often tender. Also, it is worth noting that snakebites aren’t always visible. Some people do not even feel them. 

In addition, it’s possible not to notice symptoms of snakebite for an hour or more following the bite. However, signs and symptoms usually appear within minutes in children.

It’s possible the injured person may go into cardiac arrest. In that case, they should be treated with first aid for a heart attack.

Other physical symptoms of snakebite include:

• Immediate or delayed pain around the bite
• Paired fang marks
• Single fang mark or scratch
• Bleeding
• Nausea, vomiting and diarrhoea
• Headache, drowsiness, dizziness or faintness
• Blurred vision
• Droopy eyelids
• Voice change
• Trouble speaking/swallowing
• Pain or tightness in the throat, chest or abdomen
• Difficulty breathing