Spider Bites: While many spider bites might just appear to be the work of a mosquito, if you look close you may notice distinctive, red fang marks accompanied by redness, tenderness and shooting pain. That may mean you've encountered a black widow, the most common harmful spider in California.
The most significant cost increase occurred in treatment for people with melanoma, the deadliest type of skin cancer. The study found that the cost of treatment jumped 106 percent, rising from $2,320 annually to $4,789 annually.
About 4.9 million U.S. adults were treated for skin cancer each year from 2007 to 2011, for an average annual treatment cost of $8.1 billion.2 This represents an increase over the period from 2002 to 2006, when about 3.4 million adults were treated for skin cancer each year, for an annual average treatment cost of $3.6 billion.2.