Interesting article.
There are so many diseases around and too few decent diagnoses for them. Perhaps it's only a recent phenomenon because people travel so much more frequently than they did a few decades ago so are more vulnerable to catching something or developing a condition through an unstable diet or lifestyle?
Assymetrical faces can also be genetic and if left untreated can become worse over time. Breeding used to be more selective than it is today, so perhaps this could be another reason why crooked faces are more common?
Parents need to be diligent while their child is developing and use some common sense.
Flat heads are usually caused by ignorant parents who leave their babies permanently on their back before their head hardens.
Not having the appropriate orthodontic care when you're young can also be a big factor in creating crooked faces. Braces can bring the jaw, lip and teeth into alignment.
Other more complicated factors include..
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CraniosynostosisScience Daily explains that one major cause of facial asymmetry is craniosynostosis, which is the premature fusion of the cranial sutures. This is a congenital condition and results in an asymmetric, or uneven, appearance to the face and forehead. It can be corrected by surgery, which is done early on.
Growth SpurtWalter C. Buchsieb, DDS, MS, Clinical Associate Professor Emeritus, Section of Orthodontics, College of Dentistry, The Ohio State University explains on Netwellness.org that asymmetry can occur during a puberty growth spurt. If, for example, an individual notices, as he ages, that his jaw no longer appears symmetrical, Dr. Buchseib notes that this can be the result of one side of the jaw growing faster than the other when the individual went through a growth spurt.
Hemifacial Microsomia
Another condition that can result in facial asymmetry is hemifacial microsomia, according to the National Craniofacial Association. When this condition is present, the lower half of just one side of the face is underdeveloped and doesn't grow as it should. This condition also is known as second brachial arch syndrome, otomandibular dysostosis, oral-mandibular-auriclar syndrome or lateral facial dysplasia."
https://healthfully.com/causes-facial-asymmetry-5120350.html