Several studies suggest that the presentation in people of African origin may be more severe and disseminated than for Caucasians, who are more likely to have asymptomatic disease.Manifestation appears to be slightly different according to race and sex. Erythema nodosum is far more common in men than in women and in Caucasians than in other races. In Japanese patients, ophthalmologic and cardiac involvement are more common than in other races.Sarcoidosis is one of the few pulmonary diseases with a higher prevalence in non-smokers. Notable cases
The American television personality and actress Karen Duffy wrote "Model Patient: My Life As an Incurable Wise-Ass" on her experiences with neurosarcoidosis. References


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Rudd & Genelly 1954 noticed that bird pests seemed uninterested in treated seeds, specifically pheasants and blackbirds around Davis, CA, US. They tested its repellent effect on pheasants and found it effective, speculating that it may be usable as a general bird repellent. Preparation
Lindane is prepared by treating chlorine with benzene in the presence of sunlight and in the absence of oxygen as well as substitution catalysts. Human health effects
The EPA and WHO both classify lindane as "moderately" acutely toxic. It has an oral LD50 of 88 mg/kg in rats and a dermal LD50 of 1000 mg/kg. Most of the adverse human health effects reported for lindane have been related to agricultural uses and chronic, occupational exposure of seed-treatment workers.Exposure to large amounts of lindane can harm the nervous system, producing a range of symptoms from headache and dizziness to seizures, convulsions, and more rarely, death. Lindane has not been shown to affect the immune system in humans, and it is not considered to be genotoxic. Prenatal exposure to β-HCH, an isomer of lindane and production byproduct, has been associated with altered thyroid hormone levels and could affect brain development.The Occupational Safety and Health Administration and National Institute for Occupational Safety and Health have set occupational exposure limits (permissible exposure and recommended exposure, respectively) for lindane at 0.5 mg/m3 at a time-weighted average of eight hours for skin exposure. People can be exposed to lindane in the workplace by inhaling it, absorbing it through their skin, swallowing it, and eye contact.