05/08/2026
đ¨ MEASLES (RUBEOLA): HIGH-YIELD CLINICAL RECAP đŠēâ¨
Measles remains one of the most contagious airborne viral infections worldwide, yet it is fully preventable.
đ Core Snapshot
* Pathogen: Measles virus (Morbillivirus, Paramyxoviridae family).
* Transmission: Respiratory droplets & airborne spread.
* Incubation Period: 7â14 days (Rash usually appears ~14 days post-exposure).
* Infectious Period: 4 days BEFORE to 4 days AFTER the onset of the rash.
đŠē Clinical Presentation
1ī¸âŖ Prodromal Phase (2â4 Days)
The classic hallmark triadâThe 3 Cs:
* đ´ Cough
* đ´ Coryza
* đ´ Conjunctivitis
* Associated with: High fever, malaise, and photophobia.
2ī¸âŖ Koplik Spots (Pathognomonic!)
* Small, bluish-white lesions on the buccal mucosa (opposite the lower molars).
* Appears 1â2 days before the rash onset.
3ī¸âŖ The Measles Rash
* Type: Erythematous maculopapular rash.
* Distribution: Starts behind the ears/hairline â Spreads cephalocaudally (downward to trunk and limbs).
* Resolution: Fades in the same order with brownish discoloration and fine desquamation.
đŦ Diagnosis & Workup
* Clinical: High index of suspicion based on history & examination.
* Laboratory:
* Measles IgM Antibody (post-rash onset).
* RT-PCR (Throat/nasopharyngeal swab or urine) for early confirmation.
* CBC: Commonly reveals leukopenia.
â ī¸ Key Complications
* Respiratory: Pneumonia (Leading cause of mortality! đ´), Otitis Media, Croup.
* Gastrointestinal: Diarrhea, Dehydration.
* Neurological: Acute Encephalitis, Febrile Seizures, and SSPE (Subacute Sclerosing Panencephalitisâa rare, late fatal complication).
* Ophthalmic: Keratitis, Corneal Ulceration, Blindness (heightened in Vitamin A deficiency)
đ Management & WHO Vitamin A Protocol
đĸ Supportive Care
* Airborne isolation precautions.
* Adequate hydration & nutritional support.
* Antipyretics (Paracetamol).
* Antibiotics only if secondary bacterial infection is confirmed.
đĄ Vitamin A Therapy (WHO Guidelines)
Administered once daily for 2 consecutive days:
* đļ < 6 Months: 50,000 IU
* đļ 6â11 Months: 100,000 IU
* đ§ âĨ 12 Months: 200,000 IU
(Note: A 3rd dose is recommended after 2â4 weeks if there is clinical evidence of Vitamin A deficiency or severe ocular involvement).
đĄī¸ Prevention & Prophylaxis
* Vaccination: 2 doses of Measles-containing vaccine (MMR / MR).
* Post-Exposure Prophylaxis (PEP):
* MMR Vaccine: Within 72 hours of exposure.
* HNIG (Immunoglobulin): Within 6 days for high-risk contacts (infants, pregnant women, immunocompromised).
đĄ Save this post for quick revision during wards and clinical rounds!
âī¸ Dr. Md. Zannanul Haque Bappy
MBBS (DU), FCPS Part II Trainee (Gastroenterology)
PGT (Medicine), CCD (BIRDEM), CMU
Assistant Registrar, Department of Medicine
