Hobo spiders are venomous. Although a hobo spider bite initially inflicts only slight redness and a minimal amount of pain, this preliminary reaction is deceptive. After about 24 hours, a blister forms. Soon after, the blister opens and begins oozing.
Visible complications from a hobo spider bite are only part of the danger. Severe headaches are among the most common symptoms of a hobo bite. Once bitten, a person may also experience nausea and fatigue. Memory loss and troubled vision are among the most significant symptoms. The sooner someone receives medical help after a hobo spider bite, the better he can combat the reactive symptoms.