What to do after jellyfish stings, insect bites, and dangerous animal encounters in Nha Trang?

For plankton irritation and common jellyfish stings, antihistamines and rinsing with vinegar help. Box jellyfish stings require immediate medical attention — ointments won't work. Sea urchin injuries must be treated by a doctor; do not try to remove spines yourself.

The tomcat centipede is extremely venomous — its venom is said to be 10 times stronger than a cobra's. Never touch it or even the surface it rested on, as contact causes a chemical burn. Seek a doctor immediately if exposed. If found in your hotel room, request pest control and fresh bedding from the hotel.

A bite or scratch from a monkey requires a full rabies vaccination course. Do not delay — go to a clinic immediately after any contact.

Snake encounters in Nha Trang are extremely rare and not a practical concern for most travelers.

Local pharmacies in Nha Trang sell an orange ointment effective for insect bites, jellyfish burns, and plankton irritation. Not available everywhere, so it's worth picking up when you spot it.

Insect repellent sprays against mosquitoes and midges are sold in local pharmacies, though not in all of them. Antihistamines such as suprastin are also available locally — useful at the first sign of an allergic reaction to bites.