Botulism is a rare but serious paralytic illness caused by a nerve toxin produced by the bacterium Clostridium botulinum (klos-trih-dee-um bot-u-li-num). Human botulism is mainly caused by four of the seven recognized types of Clostridium botulinum bacteria: types A, E, rarely F and possibly G. The recorded history of botulism began in 1735, when the disease was first associated with the consumption of sausage.
Warts occur in a variety of shapes and sizes. A wart may appear as a bump with a rough surface, or it may be flat and smooth. Tiny blood vessels (capillaries) grow into the core of the wart to supply it with blood.
Wart facts. 1  Warts are small, self-limited tumors caused by human papillomavirus (HPV) infection. 2  Types of warts include common warts, flat warts, plantar warts, periungual warts, and filiform warts. 3  Warts typically disappear on their own with time, but it may take years. Types of warts include common warts, flat warts, plantar warts, periungual warts, and filiform warts. 2  Warts typically disappear on their own with time, but it may take years. 3  Warts respond variably to a variety of treatment measures.