Is that normal to get skin discoloration after Tattoo Removal treatment?

It is completely normal to get brown discoloration after tattoo removal. The pigment gets broken up by the laser and removed from the body but the heat and inflammation of the treatment make your body make pigment in the area. This pigmentation is just like a tan. The pigment producing cells get stimulated from the laser and make more pigment in the area. This pigment fades with time. Be patient and the skin should return to normal color within a few months. If it's not fading your doctor should be able to help you with a medicated cream to fade it quicker.

If the correct laser and setting is used you should not get any skin discoloration.You should go back to your doctor any consider a different type of laser.  You would be a great candidate for the Alex Trivantage laser. This laser is the only one on the market that can target colors.

Most black tattoos will develop a light brown appearance in the weeks and months following a Picosure or Q-Switched laser treatment.  In the majority of cases, this is the normal appearance of treated tattoo ink that is in the process of moving out of the skin, and will disappear as the tattoo fades.Very rarely, in darker skin coloured individuals, it may represent temporary tanning of the skin, known as post inflammatory pigmentation.  Fortunately even post inflammatory pigmentation is usually temporary, but may take many months to fade. It is always wise to strictly protect a treated tattoo from sun exposure in this setting and your dermatologist may recommend a skin fading cream.