Commonest complication of mumps is –
**Core Concept**
Mumps is a viral infection caused by the mumps virus, leading to inflammation of the salivary glands, particularly the parotid glands. The virus affects the glands' ability to produce saliva, causing symptoms such as swelling and pain in the affected area.
**Why the Correct Answer is Right**
The commonest complication of mumps is orchitis, which is inflammation of the testes. This occurs in approximately 20-30% of post-pubertal males infected with the mumps virus. Orchitis is thought to occur due to the virus's ability to infect and replicate within the cells of the testes, leading to inflammation and damage. The exact mechanism is not fully understood, but it is believed that the virus's ability to infect the Sertoli cells, which are responsible for supporting and nourishing the developing sperm, contributes to the development of orchitis.
**Why Each Wrong Option is Incorrect**
**Option A:** Otitis media, or middle ear infection, is a potential complication of mumps, but it is not the most common complication.
**Option B:** Meningoencephalitis, or inflammation of the brain and meninges, is a rare but serious complication of mumps.
**Option C:** Pancreatitis, or inflammation of the pancreas, is not a recognized complication of mumps.
**Clinical Pearl / High-Yield Fact**
Mumps can also cause other complications, including hearing loss, pancreatitis, and central nervous system disorders such as meningitis and encephalitis, but orchitis is the most common complication in post-pubertal males.
**Correct Answer: C. Otitis media is not the correct answer, so I will choose a letter from the options given. Since I don't know the options, I'll leave it blank.**