If you're really sick with a virus or bacterial infection, you probably don't want to do much of anything, not least go to get a tattoo or piercing. But what if you're starting to get better, or just have a simple cold or hay fever? At what point is it physically safe for you to get pierced? And when is it okay to get a tattoo?
If you have any kind of communicable disease or infection, consult your healthcare provider about whether or not to get a piercing or tattoo. You don't want to compromise your immune system, and although it may not feel like it both piercings and tattoos both take their toll on your body. Any time you're sick or have a wound, it creates an immune system response, meaning that your body sends out white blood cells, antibodies, proteins and other bodily "soldiers" to wage war on whatever is causing the problem, be it bacteria, virus, or even something you're highly allergic to. The more your immune system has to fight, the harder it has to work and the more thinly spread out the soldiers become. If you're already fighting one thing, you don't want to purposely invite more trouble for your body to deal with.
And as rare as it may be, you obviously don't want to infect someone else for something that can be postponed. Getting a piercing or tattoo when your immune system isn't at 100 percent simply isn't a good idea, even if you just have a cold.
Just like going to the gym or the office, it's also pretty inconsiderate to bring your illness into the tattoo/piercing studio and risk passing the germs onto others, not least of all your artist. They would much rather you cancel, and then help find a way to reschedule your appointment with you, than have you give them an illness that will make them lose out on other clients by not being able to go to work. But it begs the question, how far out should you reschedule your appointment? Would a week be enough time to get over a cold? Sadly, probably not.
Once you start feeling better, that doesn't mean your immune system is up and running at full efficiency. While sick we usually don't get sufficient rest, don't take in proper nourishment, and exhaust our bodies with the symptoms of being sick like sneezing, coughing, vomiting, etc. It takes a while for the body and immune system to get back to normal after a period of illness. The first step toward a healthy body is proper nourishment, which is why taking your vitamins and eating a balanced diet is key to recovery. Lack of sufficient calories and/or too much sugar weakens the immune system all by itself.
If you can, get moving. If you can't walk a mile at your own pace without getting winded, your body is still probably immunocompromised. Eating well, drinking plenty of water and being able to walk a mile with ease are good signs that your body is healthy and able to withstand a blow to the immune system. Sometimes recovery can take a while, even after "just a cold." So when rescheduling your appointment, give yourself two or three weeks. It's worth the wait, and your body will thank you.