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.
The first symptom of (tetrodotoxin) intoxication is a slight numbness of the lips and tongue, appearing between 20 minutes to three hours after eating poisonous puffer fish,. The next symptom is increasing paraesthesia in the face and extremities, which may be followed by sensations of lightness or floating.