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.
For all other types of cancers during the same time period, the average yearly cost for treatment increased by 25 percent, or five times slower than the cost of skin cancer. From 2002 to 2006 the treatment costs for skin cancer increased $3.6 billion, and from 2007 to 2011 the costs increased to $8.1 billion.