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Causes Smoker melanosis in a patient consuming 2 packs of cigarette per day. Smoking or the use of nicotine-containing drugs is the cause to Smoker's melanosis,. Also tar-components (benzopyrenes) are known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause. These chemical agents have a polycyclic, cha
Chew and spit. Chew and spit (sometimes abbreviated as CHSP or CS) is a compensatory behavior associated with several eating disorders that involves chewing food and spitting it out before swallowing, often as an attempt to avoid ingesting unwanted or unnecessary calories. CS can be used as a way to taste food viewed as “forbidden” or ...
Many species of arthropods (insects, arachnids, millipedes and centipedes) can bite or sting human beings. These bites and stings generally occur as a defense mechanism or during normal arthropod feeding. While most cases cause self-limited irritation, medically relevant complications include envenomation, allergic reactions, and transmission ...
MECP2 gene mutations are the cause of most cases of Rett syndrome, a progressive neurologic developmental disorder and one of the most common causes of intellectual disability in women. ARX: Aristaless related homeobox, is a protein associated with intellectual disability and lissencephaly. This gene is a homeobox-containing gene expressed ...
Tardive dyskinesia ( TD) is a disorder that results in involuntary repetitive body movements, which may include grimacing, sticking out the tongue or smacking the lips. [1] Additionally, there may be chorea or slow writhing movements. [1] In about 20% of people with TD, the disorder interferes with daily functioning. [3]
Tic. A tic is a sudden and repetitive motor movement or vocalization that is not rhythmic and involves discrete muscle groups. [1] [2] [3] It is typically brief and may resemble a normal behavioral characteristic or gesture. [4] Tics can be invisible to the observer, such as abdominal tensing or toe crunching.
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.
Generally, diseases outlined within the ICD-10 codes L60-L75 within Chapter XII: Diseases of the skin and subcutaneous tissue should be included in this category. Wikimedia Commons has media related to Disorders of skin appendages. Conditions of the skin appendages are those affecting the glands of the skin, hair, nails, and arrector pili muscles.