Evaluate change of quality of life of sarcoiodosis patients over a six months using various quality of life instruments including a monthly smart phone app.

Inclusion Criteria:

• Diagnosis of sarcoidosis by established criteria.
• Patient has completed pulmonary function tests (spirometry) as per standard of care at the enrollment visit.
• Ability to understand and read English at least at a 7th grade level.
• Have access to a computer, iPad, smart phone, or another electronic device that will support the on-line sarcoidosis assessment platform.
• The subject is willing to wear a daily activity and sleep tracker wristband (Fitbit ™ wristband) for 6 months.

Exclusion Criteria:

• Life expectancy of < 1 year.

Patients followed at sarcoidosis clinics across United States

none at this time