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.
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.
Garlic or onions that have sprouted are still good to eat, but the sprouts have an unpleasant, bitter flavor. For sprouted garlic, cut each clove in half and remove the green sprout. Do the same for onions. If onions have a bruised area, simply cut it away before cooking.