Why Is My Face Asymmetrical?
Quick Answer
Is facial asymmetry normal?
Yes — nearly everyone has some natural facial asymmetry, and small differences between the two sides of your face are normal anatomical variation, not a medical problem. New, sudden, or worsening asymmetry is different and worth a doctor's evaluation.
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Almost no one has a perfectly symmetrical face — and that's normal. But if you've noticed your asymmetry seems more pronounced than it used to be, or you're wondering why one side of your face looks different from the other, it helps to understand the common causes before deciding what, if anything, to do about it.
What are the common causes of facial asymmetry?
Genetics and developmental variation, behavioral habits (chewing or sleeping on one side), dental malocclusion, previous injury, age-related soft-tissue descent, and neuromuscular conditions like Bell's palsy are the most common causes of facial asymmetry.
The Main Causes
Genetics and development
Many people have some facial asymmetry from a young age — differences in bone growth, eye height, or jaw shape that developed naturally and aren't caused by anything you did.
Repeated habits
Chewing predominantly on one side, or consistently sleeping with one side of your face pressed into a pillow, can subtly reinforce asymmetry over years through repeated, uneven muscle use and tissue compression.
Dental bite (malocclusion)
Misalignment between the upper and lower jaw can pull the lower face out of symmetry over time, especially if it went untreated during childhood or adolescent development.
Previous injury
A fracture or significant soft-tissue injury — even one from years ago — can heal in a way that leaves lasting asymmetry in bone position or skin/muscle alignment.
Age-related soft-tissue changes
This is one of the most common causes in adults: the fat pads that give the midface its youthful fullness, and the skin covering them, don't always descend at the same rate on both sides as we age. One cheek or jowl can end up looking fuller, lower, or more hollow than the other.
Neuromuscular conditions
Bell's palsy and other conditions affecting the facial nerve can cause one side of the face to move less than the other — drooping, an uneven smile, or difficulty closing one eye. This category needs prompt medical evaluation, not a cosmetic consultation.
Jaw joint (TMJ) disorders
Temporomandibular joint disorders are strongly linked to jaw-related facial asymmetry — a 2025 study found TMD present in over three-quarters of patients with mandibulofacial asymmetry. Jaw pain, clicking, or limited opening alongside asymmetry points here first.
When It's Normal vs. When to See a Doctor
Mild, longstanding, stable asymmetry that's been part of your face for years is almost always normal anatomical variation. See a doctor — not a cosmetic surgeon first — if your asymmetry is new, sudden, or rapidly worsening, involves drooping on one side, comes with numbness, weakness, or trouble closing one eye or smiling evenly, or follows a recent injury. These patterns can indicate Bell's palsy, nerve involvement, or — in rare cases — a more serious neurological event, and warrant medical evaluation first.
Can a Deep Plane Facelift Help?
Only for one specific category above: age-related asymmetry caused by uneven soft-tissue descent. A deep plane facelift repositions the deeper facial tissue layer on each side of the face individually — not just the skin — so a surgeon can address genuine differences in how each side has aged. It does not, and cannot, correct asymmetry caused by bone structure, dental bite, or nerve function. No procedure makes a face perfectly symmetrical, and mild asymmetry is normal to expect even afterward.
Frequently Asked Questions
Medical References
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- 03Mayo Clinic - Facelift: Overview, Risks and Results(opens in new tab)(Organization)Accessed: 2026-04-01
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