Dear as you described the lesions may be your mother suffering from
Superficial morphoea - It is typically seen as symmetrical mauve-coloured patches, usually in skin folds of the groin, armpits or under breasts. This type is most commonly found in middle-aged women.
Superficial morphoea part of localised
scleroderma.
Medical Care
Lesions of superficial circumscribed
morphea often undergo gradual spontaneous resolution over a 3- to 5-year period. Limited disease can often be managed with topical therapy or lesion-limited
phototherapy.
Treatment of active lesions with superpotent topical or intralesional
corticosteroids may help reduce inflammation and prevent progression, although there is a lack of data supporting their efficacy.
Tacrolimus 0.1% ointment applied twice daily for 12 weeks may be a useful first-line agent for active, limited
plaque morphea, as supported by a small double-blind, placebo-controlled study.