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Apert syndrome. Apert syndrome is a form of acrocephalosyndactyly, a congenital disorder characterized by malformations of the skull, face, hands and feet. It is classified as a branchial arch syndrome, affecting the first branchial (or pharyngeal) arch, the precursor of the maxilla and mandible. Disturbances in the development of the branchial ...
Leukonychia. Other names. White nails or Milk spots [1] Specialty. Dermatology. Leukonychia (or leuconychia) is a medical term for white discoloration appearing on nails. [2] It is derived from the Greek words leuko 'white' and onyx 'nail'. The most common cause is injury to the base of the nail (the matrix) where the nail is formed.
A 66-year-old man mutilated his fingers by biting them for six years, resulting in loss of the terminal phalanges of all fingers on both hands. Andre Thomas, a convicted murderer and death row inmate from Grayson County, Texas, removed his left eye on 9 December 2008. He had already removed his right eye in 2004 after murdering his estranged ...
Arachnodactyly. Arachnodactyly (" spider fingers ") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot. In some cases, the thumbs of an individual with the condition are pulled inwards towards the palm. This condition is present at birth.
Hypermobility, also known as double-jointedness, describes joints that stretch farther than normal. For example, some hypermobile people can bend their thumbs backwards to their wrists and bend their knee joints backwards, put their leg behind the head or perform other contortionist "tricks". It can affect one or more joints throughout the body.
Lujan–Fryns syndrome ( LFS) is an X-linked genetic disorder that causes mild to moderate intellectual disability and features described as Marfanoid habitus, referring to a group of physical characteristics similar to those found in Marfan syndrome. [4] [5] These features include a tall, thin stature and long, slender limbs. [5]
Trichotillomania ( TTM ), also known as hair-pulling disorder or compulsive hair pulling, is a mental disorder characterized by a long-term urge that results in the pulling out of one's own hair. [2] [4] A brief positive feeling may occur as hair is removed. [5] Efforts to stop pulling hair typically fail.
Thumb sucking is a behavior found in humans, chimpanzees, captive ring-tailed lemurs, [1] and other primates. [2] It usually involves placing the thumb into the mouth and rhythmically repeating sucking contact for a prolonged duration. It can also be accomplished with any organ within reach (such as other fingers and toes) and is considered to ...