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What are the common presentations of sarcoidosis?

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Half of patients are asymptomatic, the rest develop respiratory (e.g. cough and dyspnoea) or skin (e.g. erythema nodosum, lupus pernio, scars, plaques) disease. Ocular, lacrimal gland and salivary gland involvement are relatively common and approximately 5% of patients develop neurosarcoidosis

How is pulmonary sarcoidosis staged?

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Staging is based on a chest radiograph into 5 stages. Stage 0 : normal chest radiograph (5 - 10% of patients at presentation). Stage I : hilar or mediastinal nodal enlargement only (45 - 65% & 60% go onto complete resolution). Stage II : nodal enlargement and parenchymal disease (25 - 30%). Stage III : parenchymal disease only (15%). Stage IV : end-stage lung (pulmonary fibrosis)