Yes, there are some conditions that will prevent your having a tattoo, and others that should make you think twice before you get one.

First off, hemophilics should not get tattoos. If you can even find a tattoo artist who is willing to give you one, you have to realize that getting a tattoo involves having a needle pierce your skin over and over again. Almost everyone experiences some blood loss, and a hemophilic will experience more than most.

Secondly, pregnant women should also avoid getting tattoos. There is enough going on with your body, and the one forming inside it, that you shouldn't complicate the situation any further. Again, a tattoo is an open sore, and although allergic reactions and infections are rare, it is inadvisable for you to take that risk. There'll be plenty of time enough after the baby is born.

If you have any communicable diseases, you should think twice about getting a tattoo. The tattoo artist should know about your condition before you get a tattoo, too, because he or she risks exposure to something. It's not fair to expose someone to a disease without informing them of the risks. If they still want to take you on, make sure you are as healthy as possible when you get the tattoo, and that your tattoo artist takes the utmost care with the safety and hygiene procedures.

Diabetics also need to take very good care before they get tattoos. As long as your blood sugar is at a healthy level and you are in good shape otherwise, you should be able to get a tattoo without any trouble. However, diabetics should avoid tattoos in the area where they may experience really poor circulation, like on the legs and feet.

If you have epilepsy, talk to your doctor before you get a tattoo. If your incidence of seizures is low, you should be able to get a tattoo without any complications. Even if you are on medication to manage the seizures, you should be able to get a tattoo as long as you are taking your medication regularly and in otherwise good health. Let the artist know about your condition, and what to watch for. Discuss the situation with your doctor and follow any medical advice given. You may also want to take someone with you to help you feel more comfortable.

For more information about tattoos and these conditions, see our other FAQs about 'Tattoos and Your Health.'