Mumps (epidemic parotitis) is an acute, systemic viral disease caused by the mumps virus, a member of the family Paramyxoviridae. It is characterized by the swelling of the salivary glands, typically the parotid glands.
Mumps is characterized by the following features.
Prodromal phase: Initially, there is a prodromal phase in which the patient suffers from malaise and low-grade fever.
Parotitis: After the prodromal feature, the classical, tender enlargement of the parotid gland starts developing. In around 75% of the cases, the enlargement is bilateral. Usually, there is swelling of only one gland in the initial stage and the second gland enlarges after one to three days. Sometimes, the second gland may enlarge after the recovery of the first gland.
Complications: The common complications of mumps include orchitis, oophoritis, meningitis and pancreatitis. If meningitis or orchitis develop as complications of mumps, high grade fever may also be seen .
Mumps is easily diagnosed on clinical grounds. However, the following investigations are helpful in confirming the diagnosis.
The treatment of mumps is supportive and symptomatic. Mumps does not require any specific antiviral therapy as the illness is self-limiting.
Painkillers: Non-steroidal anti-inflammatory drugs (NSAIDs) such as paracetamol and ibuprofen are used to treat the pain of parotitis. Application of warm or cold compresses topically over the parotid gland may soothe the pain.
The complications of mumps are treated as follows.
Orchitis: In case of orchitis, the scrotum should be suspended with support and ice bags should be applied to keep their temperature from rising to dangerously high levels. Analgesics are given for pain. Injection of 1% procaine solution in the spermatic cord at the external inguinal ring also reduces pain. Injection of hydrocortisone followed by oral prednisolone is also helpful in reducing the pain and inflammation .
Pancreatitis: The treatment of pancreatitis is symptomatic.
In the patients with uncomplicated disease, the prognosis is excellent. Patients who develop complications may have chronic morbidity but fatality is still extremely rare. Even if the patients develop meningitis or encephalitis, the prognosis remains favorable, although there may be sensorineural deafness. Even then, the hearing loss is rarely permanent. Similarly, total loss of fertility in patients with orchitis is extremely rare and no loss of fertility is seen in case of oophoritis.
Mumps infection is also linked to the development of type 1 diabetes mellitus  .
Mumps was a very common disease several decades ago but nowadays, with the advent of MMR vaccine, the prevalence has greatly reduced in the developed countries. The incidence is highly variable from country to country depending upon the efficiency of their immunization programs.
Most of the patients of mumps are children of school age. Males and females are equally affected. However, the complications of the central nervous system are up to 3 times more common in males.
Once the virus enters the body via respiratory droplets, it disseminates through the bloodstream into the parotid glands and several other sites such as the nervous system, the testes, ovaries etc. There is active inflammation and cellular infiltration that causes enlargement and pain of the parotid glands.
Mumps can be prevented by proper immunization in children. Currently, the vaccine of choice is MMR (that covers mumps, measles and rubella) . It should be given at the age of 12 months and then followed up with a second dose after another 12 months. Avoidance of contact with any active case of mumps is also helpful in prevention.
Mumps is a common viral disease of children that produces tender inflammation and enlargement of the parotid gland(s). The causal agent is a paramyxovirus and infectivity occurs by respiratory droplets, saliva and urine. The disease is self-limiting and the treatment is symptomatic and supportive unless there are complications.
Mumps is a viral disease of children in which the parotid salivary glands become enlarged and painful. It is a highly contagious disease and spreads through respiratory droplets. The disease is usually not dangerous and the patient is treated only with painkillers unless there are complications. Mumps can be prevented by proper vaccination.