Related Experiment Videos
Hypersensitivity to mosquito bite and malignant histocytosis
Abstract:
The follow-up data from 21 cases in Japan of severe local and constitutional hypersensitivity to mosquito bite (mosquito allergy) were collected. Three cases are now cured and no longer show hypersensitivity and 9 cases died, in 7 of these death being attributed to malignant histiocytosis (MH) or related conditions. In another case a systemic malignant neoplasm was suspected but was not confirmed as MH. Since both mosquito allergy and MH are exceedingly rare conditions, the association of the two is unlikely to be coincidental, and the possibility of a participation of viral infection is suspected as the cause of the systemic histiocytoses including MH.
Insights
Severe mosquito allergy (hypersensitivity) in Japan was linked to a rare blood disorder, malignant histiocytosis (MH). Researchers suspect viral infections may cause this association, warranting further investigation into mosquito bite reactions and MH.
Area of Science:
- Immunology
- Hematology
- Infectious Diseases
Background:
- Severe hypersensitivity to mosquito bites, termed mosquito allergy, is a rare condition.
- Malignant histiocytosis (MH) is an exceedingly rare group of disorders characterized by abnormal proliferation of histiocytes.
Purpose of the Study:
- To investigate the potential association between severe mosquito allergy and malignant histiocytosis (MH).
- To explore possible underlying causes, such as viral infections, for the observed association.
Main Methods:
- Follow-up data from 21 cases of severe mosquito allergy in Japan were collected and analyzed.
- Clinical outcomes, including mortality and specific causes of death, were documented.
Main Results:
- Out of 21 cases, 3 recovered, while 9 died.
- In 7 fatal cases, death was attributed to malignant histiocytosis (MH) or related conditions.
- One additional case showed suspected systemic malignant neoplasm, not confirmed as MH.
Conclusions:
- The observed association between mosquito allergy and MH is unlikely to be coincidental due to the rarity of both conditions.
- Viral infection is suspected as a potential trigger for systemic histiocytoses, including MH, in patients with severe mosquito allergy.