Finger Nails

Source Subject Hair Head Pubic Nail Finger Toe Urine (jug ml-1)... 

The possible roles of nails (fingers and toes) in exposure to chemicals include direct contact with the cuticle and nail, inhalation from volatilization of a chemical applied to the nails, and oral intake via nail biting and finger sucking. Consumer products of relevance include nail lacquers ( polishes ) and nail lacquer removers applied via various means (applicator, cotton ball, etc.). Also, handwashing, dishwashing, shampoo, hard surface cleaning, etc., products would involve nail contact, as would contact with residential water and soil, and paints and paint removers, and petrol. Nail lacquers can include toluene, 1,1,1-trichloroethane, and phthalates, while nail lacquer remover can include ethyl acetate. 

Water-soluble, volatile with steam. Gut effects vomiting and diarrhoea, meningitis-like symptoms. Bright red skin. Boiled lobster appearance bright red nails, fingers and toes. Skin exfoliates later. Lethal dose 15-20 g adults 3-5 g infants. 

The goal of our research was the comparison of the elemental content in cut part of nail and the part of nail, which contacts with the soft tissues of finger, the determination of elemental concentrations in 20 nails of individual, the determination of the elemental distribution as a dynamic mechanism. 

The sampling of nails was performed from the all fingers of hands and foots of healthy people both sexes at the age of 20-30 years old. We elaborated the method for removing the exogenous contaminations from the nail samples. 

Your fingers, spaces between your fingers, fingernails, palms, backs of your hands, forearms, upper arms, and nails should be examined. 

Clubbing Proliferation of soft tissues, especially in the nail bed, which results in thickening and widening of finger and toe extremities. 

A key factor affecting the length of time before the onset of symptoms as well as the severity of the symptoms is the part of the body that is exposed to the agent. Apart from mucous membranes, the regions of the body that are the most sensitive to vesicants are warm, moist areas, and areas with thin skin such as the face, armpits, inside of the elbow, genitalia, neck, skin between the fingers, and the nail beds. The least susceptible body regions are the palms of the hands, soles of the feet, front of the knee, and outside of the elbow. 

The anti-inflammatory agent benzoxaprofen (229) was withdrawn from clinical use in 1982 because of its photosensitizing effects [83]. Many patients experienced itching and urticaria, while some suffered onycholysis - separation of the finger nails from the nail beds [138], In a trial, healthy volunteers were sensitive by the 4th day of treatment. UVA provoked itching and a burning sensation followed by development of a classical wheal and flare response within 2 to 4 min [139]. 

The ketones have an imbedded signature, a carbon atom with a double-bonded oxygen attached. Acetone (finger nail -polish remover) is the simplest and most common ketone. 

Reports of allergic sensitivity to MDA are confounded by mixed exposures to chemicals such as epoxy resins and isocyanates, which make it difficult to relate specific cause with effect. MDA does appear to cause an intense yellow staining reaction involving the skin (especially fingers and palms), nails, and occasionally hair in exposed workers. The staining should serve as a marker for potential systemic exposure. 

Herpes zoster Angular cheihtis Recurrent oral ulcerations Papular pruritic eruptions Seborrhoeic dermatitis Fungal nail infections of fingers Clinical stage HI... 

Wallerius in 1747 used a finger nail, knife, file or diamond powder for hardness determination. Werner in 1774 rubbed a mineral against a finger nail, knife or piece of steel to determine the quantities of powder thus derived. Hatty (1801) used calcite and quartz as well as glass for this purpose. The first arbitrarily chosen scale of hardness, containing exclusively minerals, was devised in Sweden by Kvist in 1768. It covered diamond—20, topaz—15, zeolite—13, quartz—11, fluorite—7, calcite—6, gypsum—5 and chalk—2. 

Of course nothing can stop such nails from moving up the finger and eventually they have to be removed. The solvent for doing this is acetonitrile121 which must be used carefully because it can be absorbed through the skin, which is why it is only available at nail salons. 

The basic amino acids of keratins. The basic amino acid content of human finger nails and cattle horn. Ibid., 104, 339 (1934). 

Habitual users of tobacco feel no need to smoke. Chain smokers of marijuana do not need their weed. Nail biters leave their fingers alone. Compulsive... 

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