1 Pain that does not diminish with rest, and pain that may be worse at night than during the day. 2  Back pain along with constitutional symptoms, such as loss of appetite, unplanned weight loss, nausea, vomiting, or fever, chills or shakes.
Unstable chemicals. Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion.
A tomato's fragile skin can easily start splitting and cracking due to inconsistencies in soil moisture. Once a tomato starts to ripen, it forms a protective skin that helps it during harvest, but if rain is heavy during ripening time and the tomato receives too much water, that skin will crack and split.