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Solar purpura (also known as "Actinic purpura," and "Senile purpura") is a skin condition characterized by large, sharply outlined, 1- to 5-cm, dark purplish-red ecchymoses appearing on the dorsa of the forearms and less often the hands. [1] The condition is most common in elderly people of European descent.
The cause of nicotine stomatitis is thought to be chemical or thermally induced keratosis. [3] The chemicals in tobacco may act as irritants in this condition. [2] Chronic heat exposure is also responsible. Pipe smoking produces more heat on the palate than any other forms of smoking.
Actinic keratosis is a common condition where your skin develops lesions that look and feel like rough spots. It’s important to treat it because without treatment, over time, it can develop into ...
The LD 50 of nicotine is 50 mg/kg for rats and 3 mg/kg for mice. 0.5–1.0 mg/kg can be a lethal dosage for adult humans, and 0.1 mg/kg for children. [19] [20] However the widely used human LD 50 estimate of 0.5–1.0 mg/kg was questioned in a 2013 review, in light of several documented cases of humans surviving much higher doses; the 2013 review suggests that the lower limit causing fatal ...
Nicotine pouches are even more discreet, with a small pouch measuring at 0.6 inches by 1.1 to 1.3 inches (14 millimeters by 28 to 32 millimeters), similar to a piece of chewing gum, that can be ...
It also aims to hammer home the message that vaping — even nicotine-free vaping — may not be free of harm, as e-cigarette vaping still exposes users to toxic chemicals, even if they contain ...
Behçet's disease is a triad of mouth ulcers, genital ulcers and anterior uveitis. [8] The main feature of Behçet's disease is aphthous-like ulceration, but this is usually more severe than seen in aphthous stomatitis without a systemic cause, and typically resembles major or herpetiforme ulceration or both.
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. [10] [11] Tar-components (benzopyrenes) are also known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause.