My mother has a black/purple rash on her chin and sides of face and when looked closely, appears to be made up of multiple micro veins. She has also noticed that it is on her tongue and inside of her mouth. Drs did biopsy which was negative for (?) cancer. Dr said he really didn t know what it is, but thought it might be a fungal infection . They gave my mother a tropical lotion bit rash is still there.
Hello This seemingly could be a part of dermatomyositis which is a paraneoplastic manifestation in some cancers as that of Thymus, get her CPK levels checked, and I think a dermatologist referral would help