Pityriasis rosea usually breaks out in a few days

After the mother spot of pityriasis rosea appears, about 1 to 2 weeks later, the proximal end of the trunk and limbs will show generalized mass lesions. This rash has the same shape as the mother spot, but smaller than the mother spot, called secondary spots. The secondary spots are about 0.5 to 2 cm in diameter, round or oval, pale red or tan, and may gradually turn red or dark red. There are fine wrinkles, clear boundaries, and fine scales on them. The rash may be circular, slightly elevated above the skin surface, and reddish in color. The rash may be scattered or densely distributed, rarely merging. If the rash is elliptical, the long axis is often parallel to the direction of the ribs. There are papules 1 to 2 mm in diameter between the spots. It is rare to develop on the face and hands and feet.