Spots change over time. Right hand knuckle that you show could be a Gottron's papule. Lupus can look like this as well, as can many other conditions.
She said that there was nothing for her to biopsy. This is the note that she included in her report:Physical exam: dilated nailfold capillary loops of fingernails, L>R. Mild erythema of proximal nail folds of fingernails. Ragged cuticles. No evident Gottron's papules, heliotrope sign, shawl sign, holster sign, or other stigmata of DM. Scalp clear with no erythema or scale-prior labs including myositis panel, CK (elevated), and aldolase (elevated) reviewed. Negative myositis panel noted.-findings on exam today support prior diagnosis of DM (esp in context of markedly elevated CPK and aldolase), although unfortunately there is not a high-yield spot to biopsy to provide additional support of this diagnosis. Suspect that pt's cutaneous findings have improved with plaquenil + prednisone therapy