3. Blood Disorders. Blood disorders such as hemophilia and leukemia can cause unexplained bruising, often because your blood fails to clot properly. If you have severe and frequent unexplained bruising, it's a good idea to see a physician to rule out such disorders, especially if it seemed to come on suddenly.
Puffer fish contain the potent neurotoxin tetrodotoxin. TTX is thought to be synthesized by a bacterial or dinoflagellate species associated with the puffer fish. The toxin is concentrated in the liver, gonads, and skin. The level of toxicity is seasonal, and, in Japan, fugu is served only from October through March.
Ciguatera fish poisoning is an illness caused by eating tropical reef fish that have accumulated a poison called ciguatoxin. Ciguatoxin is produced by microscopic organisms that grow on the surface of marine algae, seaweed, or coral.The poison gets into plant-eating fish when they feed on the algae or seaweed.hat are the symptoms of ciguatera fish poisoning? 1  numbness, tingling, or a burning sensation around mouth, hands, or feet; 2  joint or muscle pains with weakness or cramps; 3  vomiting, diarrhea, chills, itching, headache, sweating, and dizziness;