Neck and double chin photos in the assessment

The double chin is a concern for which photography is both indispensable and capable of misleading. Indispensable because the patient wants to see what the mirror does not show (the profile of their own neck). Capable of misleading because the position of the chin determines whether the photo shows submental fat, and half a centimeter of tilt creates or erases the "double chin" with nothing having changed in the face.

Here the subject is the record: angles, position, light, and the care to separate the resting photo from the photo with muscle tension. The clinical assessment is in double chin: assessment and lower third laxity.

Why does chin position change everything?

When the chin goes down, the skin and fat of the submental region fold over the neck, and the angle between chin and neck closes. When the chin goes up, the skin stretches and the cervicomental angle opens. Two photos of the same neck, a few degrees apart, look like the necks of different people.

The solution is the same as for any profile photograph: the horizontal Frankfort plane, with the gaze on a fixed point at eye level. Before photographing, ask the patient to nod "yes" and shake "no" and stop when it feels comfortable. That natural position is the closest to their everyday life.

Which views make up the set?

The set must always be the same, so the follow-up photo can be compared. The page profile photo of the face in the clinic describes the true profile, and 45-degree photo of the face details the oblique.

How to handle the contracted neck

Some people tense the neck when they feel watched, which draws the platysmal bands and creates lines that do not appear at rest. This is useful in two moments: when you want to record the bands to plan their treatment, and when you want to show the patient what happens to the neck during expression. In both cases, the contracted photo must be kept separate from the resting photo and labeled as such in the file name, as in naming clinical photo files.

For the resting photo, ask the patient to relax the shoulders, unclench the teeth, and rest the tip of the tongue on the roof of the mouth. If the bands still show, they are present at rest. The topic is developed in tensed neck in the contour photo and, on the clinical side, in botulinum toxin for platysmal bands.

What light to use without inventing fat?

The neck is a shadow zone by nature: the chin casts a shadow over it. Light from above only increases that shadow and gives the impression of fat and deeper folds. Very frontal, flat light flattens everything and erases real bands and folds. The balance is diffuse light from the front and slightly above, the same described in lighting for clinical facial photos, with a little extra care for shadow on the face. If there is a ceiling lamp right above the patient, change their position or turn that light off.

A simple reflector (white poster board at chest height, out of frame) lifts the shadow under the chin without creating a second light source.

And camera height?

Camera at eye level is the standard. If the camera is lower, the double chin looks bigger, because the angle "sees" under the chin. If it is much higher, it looks smaller. Record the height in the medical record, as in camera height in the patient photo. And keep the documentation distance: up close, submental fat looks bigger and the neck wider.

How to talk to the patient about the photo

The neck photo is usually the hardest to accept, because it shows a part the person almost never sees. Explain beforehand what it is for and let them look with you. Use neutral words ("volume," "submental region") instead of "double chin" or "sagging," and avoid comparisons. If the cause is position, show the two photos side by side and explain.

Which mistakes to avoid

• Photographing with the chin lowered and attributing the result to fat.
• Taking the before photo in one light and the after in another.
• Leaving a collar, hair, or necklace in the frame.
• Mixing the contracted photo with the resting photo without a label.
• Forgetting the profile on both sides.

A good neck photo is one that shows the anatomy at rest, in the natural position, with soft light. It is the one that survives comparison six months from now.