Search results
Results from the WOW.Com Content Network
Light sensitivity or photosensitivity refers to a notable or increased reactivity to light. Apart from vision, human beings have many physiological and psychological responses to light. In rare individuals an atypical response may result in serious discomfort, disease, or injury. Some drugs have a photosensitizing effect.
This flickering can cause problems for some individuals with light sensitivity [1] and are associated with headaches and eyestrain. Such lamps are listed as problematic for some individuals with autism , epilepsy , [ 2 ] lupus , [ 3 ] chronic fatigue syndrome , Lyme disease , [ 4 ] and vertigo . [ 5 ]
Complaints of electromagnetic hypersensitivity may mask organic or psychiatric illness: in a recent psychological model of mental disorder, [20] Sébastien Point proposed to consider it as a specific phobia. Diagnosis of those underlying conditions involves investigating and identifying possible known medical causes of any symptoms observed. [1]
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis. The plague, fevers, tularemia: The diseases fleas can carry and how to ...
Humans have their own species of fleas, Cohen said, but they can't live long off of people. She said a main determinant if you have fleas are long itchy red bites on the skin. The reaction could ...
Dog fleas had not been found in Virginia in more than 70 years, and may not even occur in the US, so a flea found on a dog in the United States is likely a cat flea (Ctenocephalides felis). [31] [32] One theory of human hairlessness is that the loss of hair helped humans to reduce their burden of fleas and other ectoparasites. [33]
Gross, but true: cockroach saliva, feces, and body parts can cause allergies and asthma symptoms if in the air, including coughing, congestion, wheezing, ear and sinus infections, and skin irritation.
The human flea (Pulex irritans) – once also called the house flea [1] – is a cosmopolitan flea species that has, in spite of the common name, a wide host spectrum. It is one of six species in the genus Pulex ; the other five are all confined to the Nearctic and Neotropical realms . [ 2 ]