CMTC can appear on many parts of the body.
Hereby an overview regarding which actions can be taken per part of the body.

Patches around the eyes and/or on the forehead
In this case there is a chance of glaucoma (raised pressure in the eyeball that can lead to blindness) and brain abnormalities. In the latter case, an MRI scan is recommended.

Patches around the nose and jaw area
Generally speaking no action needs to be taken.

Patches in the ears
Let an ENT specialist inspect the ears regularly and carry out a hearing test when needed.

Patches in the mouth
Let a dentist check development in the area regularly.

Patches on the head
Generally speaking no action needs to be taken.

Patches on the neck
Generally speaking no action needs to be taken.

Patches on the legs
In this case the legs may develop asymmetrically in length and girth. The most significant variation occurs mainly at a young age. During the physical development stage the patches are mostly less visible in terms of intensity.

Patches on the buttocks and/or torso
If there are likely to be other syndromes in combination with CMTC then the advice would be to determine with ecography (ultrasound) whether internal organs such as liver, kidneys, heart and lungs display abnormalities. Should this be the case, then an MRI scan can be used to get a better view of the precise nature of the variations.