Jakarta (ANTARA) – Griffith University epidemiologist Dicky Budiman has warned of health risks from volcanic ash and advised people on how to safely clean themselves and their surroundings after exposure.
“Volcanic ash differs greatly from ordinary dust because it contains silica resembling sharp glass fragments that can damage exposed organs, including the eyes, nose, mouth and skin,” Dicky told ANTARA in Jakarta on Sunday.
Volcanic ash exposure can cause irritation, including red, painful, watery eyes and light sensitivity, and may cause scratches or other eye injuries, he said.
Ash can also cause conjunctivitis, an inflammation of the eye lining that can result in redness, burning and sensitivity to light, Dicky said.
In the respiratory tract, exposure can irritate the nose and throat, causing a runny nose, dry cough and, after heavy exposure, shortness of breath or chest pain.
Symptoms can worsen in people with asthma or chronic bronchitis, potentially causing phlegm-producing coughs, breathing difficulties or wheezing, he said.
“People should avoid strenuous activity when volcanic ash levels are high because faster breathing can draw ash particles deeper into the lungs,” he said.
Fresh volcanic ash may also carry an acidic coating that can intensify irritation to the lungs and eyes before being washed away by rain, Dicky said.
People should clean ash as soon as possible using water and avoid rubbing surfaces or shaking clothing, which could spread particles further.
He also advised people to keep windows and doors tightly closed to prevent volcanic ash from entering their homes.
Doors should be opened only when necessary, such as when people need to leave, while covering exposed skin with clothing can reduce ash exposure.
People can protect their lungs by wearing a properly fitted mask, such as an N95, which covers the nose and mouth.
“Because this is sharp silica dust, use eye protection such as goggles. If your eyes become irritated, rinse them immediately with clean water,” Dicky said.
People experiencing shortness of breath, chest pain or eye problems should seek medical attention promptly to minimize the health effects of volcanic ash, he said.
“Stay alert, follow updates from official government sources and do not panic, because panic can harm us all,” Dicky said.
Mount Anak Krakatau in the Sunda Strait has been erupting continuously, with its highest-intensity activity of 2026 beginning Friday (September 4) night and continuing through Sunday.
The heightened activity has also produced rumbling and booming sounds heard as far as coastal areas of Banten and Lampung.
Volcanic ash had spread to several parts of Indonesia by Sunday, including the greater Jakarta area.
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Translator: Hreeloita DS, Rahmad Nasution
Editor: Primayanti
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