This disorder is associated with several vascular, neurological, and skeletal problems including stroke, heart attack, clotting, mental retardation, eye abnormalities, and osteoporosis, amongst many other complications.
Tattoo tipping etiquette, in general, should hover around 15% for small tattoos and 20% for larger tattoos, but as with all tips, you as a customer ultimately determine the amount based on the quality of service and the work performed. Consider your involvement as well.
The costs for removing a tattoo will depend primarily on the size of the tattoo in question. Fees will typically start around $100-150 per session for smaller tattoos and will go up from there. The typical tattoo will require approximately 5-12 treatments about 6 weeks apart for complete removal.