Unsaturated pyrrolizidine alkaloids are hepatotoxic, that is, damaging to the liver. PAs also cause hepatic veno-occlusive disease and liver cancer. PAs are tumorigenic. Disease associated with consumption of PAs is known as pyrrolizidine alkaloidosis.
The venom is what causes the symptoms. The main symptoms are pain, itching, swelling and redness at the sting site. Severe pain or burning at the site lasts 1 to 2 hours. Itching often follows the pain. Swelling. The bee sting may swell for 48 hours after the sting. The swelling can be small or large.
Bee stings not results in major hazards. But it cause more pain when one got first bite, even some times made one to faint.After 8 to 10 hours it will start itching on the skin surface.After two to three days it comes normal and some black traces or mark will be in remains in the skin. These things are enough.