More Provider Fact Sheets: It is important for all medical providers to be aware of the signs and symptoms of common sleep disorders. These Provider Fact Sheets were developed by sleep medicine professionals to equip primary care providers and colleagues in other specialties with key information regarding some of the most common sleep disorders: obstructive sleep apnea (OSA), insomnia, narcolepsy and restless legs syndrome (RLS). Each fact sheet includes the following sections: Quick Facts, Why It Matters, What You Can Do, Referring Guidelines, and Patient Information Websites.