Koplick’s spots are seen in which disease–

Correct option is A

Sol. Koplik’s spots are tiny white or bluish-white lesions with a red halo, seen on the buccal mucosa, and are pathognomonic of measles (Rubeola). They appear 1–2 days before the skin rash and are an early diagnostic sign. Recognizing them helps in early isolation and treatment of the patient to prevent further spread of this highly contagious viral disease caused by the measles virus (a paramyxovirus).
Explanation of each option:
· (a) Measles – Correct. Koplik’s spots are considered the hallmark sign of measles and appear during the prodromal stage before the skin rash.
· (b) Mumps – Incorrect. Mumps typically presents with swelling of the parotid glands, not oral spots. It has no known association with Koplik's spots.
· (c) Rubella – Incorrect. Rubella (German measles) causes a mild rash and lymphadenopathy, but Koplik’s spots are not seen.
· (d) Polio – Incorrect. Poliomyelitis is a neurological illness caused by poliovirus, and it does not involve oral lesions.