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Horse flies and deer flies [a] are true flies in the family Tabanidae in the insect order Diptera. The adults are often large and agile in flight. Only females bite land vertebrates, including humans, to obtain blood. They prefer to fly in sunlight, avoiding dark and shady areas, and are inactive at night.
Some people do develop a small, red, itchy bump that they notice after the tick bite, the Mayo Clinic says. At this early state, the bump may look and feel like a mosquito bite .
Males of these horse flies feed on plant juices, while female are bloodsuckers, [7] feeding mainly on mammalian blood, as they require a blood meal before they are able to reproduce. They may be very annoying for cattle, but usually they do not bite people.
Feeding by adult flies may cause irritation through acute stress from painful bites, resulting in loss of grazing time and reduced gain in weight. [6] Feeding by adult flies on the blood of their hosts exposes the hosts to pathogenic organisms that are infecting the fly, this can lead to acute disease of the host's blood and other organs.
Most arthropod bites and stings do not require a specific diagnosis since they typically improve with supportive management alone. Certain bites and stings present with characteristic appearances and distributions. In general, however, dermoscopic findings of bitten or stung skin rarely aid in diagnosis. [11]
When a brown recluse spider bites, you may or may not feel an immediate sharp sting, Medline Plus says. After that, pain and other symptoms tend to develop over the next few hours.
A bite of Latrodectus may not inject any venom (known as a dry bite) and so no illness occurs. About 75% of "wet" bites will have localized pain and nothing more. [1] If, however, there is a substantial dose, a bite can cause latrodectism. The main symptoms are generalized muscle pain, stomach cramps, nausea and vomiting.
The abdomen, the central nervous system, and the organs (including the lungs) are typically spared, but the extravasation in the extremities is sufficiently massive to cause circulatory shock and compartment syndromes, with a dangerous hypotension (low blood pressure), hemoconcentration (thickening of the blood) and hypoalbuminemia (drop in ...