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Hypersensitivity to mosquito bite and malignant histocytosis
The Japanese Journal of Experimental Medicine
|December 1, 1982
Summary
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.