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Measles — Koplik Spots
Koplik spots are small white spots inside the cheeks that appear early in measles, often before the skin rash. Recognising them helps the diagnosis. Reviewed by Dr Cristian Dunker.
18 May 2026
Varicella-Zoster — Chickenpox and Shingles
Chickenpox and shingles are caused by the same virus and can both produce mouth ulcers. Shingles in particular can cause severe one-sided pain along a nerve. Reviewed by Dr Cristian Dunker.
18 May 2026
Primary Herpetic Gingivostomatitis: when a child's first cold-sore virus hits the mouth
A child's first cold-sore virus can flare as swollen gums, mouth ulcers and fever. Here's what parents should know. Reviewed by Dr Cristian Dunker.
14 May 2026
Recurrent Herpes Simplex: cold sores on the lip and inside the mouth
Recurrent herpes simplex causes cold sores on the lip and sometimes inside the mouth. Here's what to look for and when antivirals help. Reviewed by Dr Cristian Dunker.
13 May 2026
Herpangina: a viral cause of throat ulcers in children
Herpangina is a common childhood viral infection that causes fever and tiny ulcers at the back of the mouth. Reviewed by Dr Cristian Dunker.
12 May 2026