Table 1. Core manifestations in ILD patients to diagnose underlying CTD66.

Organ	Manifestations to check
Peripheral circulation	Raynaud phenomenon
Skin	Sclerodactyly (Figure 1C)
	Digital ulcerations or scars
	Telangiectasia (Figure 1D, E)
	Gottron's sign
	Heliotrope rash around the eyes
	Heliotrope rash in the neck, upper chest and shoulder area (Figure 1F)
	Photosensitivity
	Mechanics' hands
Joint	Joint pain, joint swelling
	Morning stiffness (over 60 minutes)
Muscle	Muscle aches, muscle weakness
Mouth and eye	Dry mouth, dry eye (Sicca syndrome)

ILD: interstitial lung disease; CTD: connective tissue disease.