It is not a seared conscience that's lost all sensitivity.
In a food allergy or sensitivity, when the child eats a particular food, (such as eggs, for example) usually by the time the eggs reach the stomach or the intestines, the body reads the presence of eggs as an allergen (something harmful).
Many people who believe they experience a particular level of sensitivity or prior awareness of events yet to come often seek out psychic tests that can help them determine whether or not those percepions are extrasensory in nature.
A lot of us do not know what it is like to no be able to go out in the sun because of eye sensitivity, but our customers let us know how much our products have helped protect their eyes and let them enjoy normal outdoor activities.
Although children may lose their sensitivity to penicillin, if the reaction was urticarial or anaphylaxis, they are not re-challenged with the drug for safety reasons (i.e. it is not possible to predict who has lost sensitivity).
St. John's Wort has been known to cause sensitivity to sunlight in animals, and while it is unknown if humans have the same reaction, it's best to use caution when spending extended periods in the sun if using St. John's Wort.
The effect of gluten on neurological function remains a controversial subject among doctors and scientists, but mounting evidence supports the notion that gluten sensitivity triggers a number of behavioral, emotional and motor conditions.
The cinnamon may work by affecting blood sugar, activating certain enzymes like glycogen synthase and kinase (insulin receptor), resulting in increased insulin sensitivity and overall, improving the body's capacity to store glucose.
They can be connected to sensors whose sensitivity dwarfs anything a human can do.
The rocks were deceptively sharp and the coldness of the water increased the sensitivity of the soles of her feet.