She mentions that she has developed two blemishes, one on her left rear cheek and another on her right cheek; Developed blemishes, one on her left rear cheek, it is bumpy getting bigger; Developed two blemishes, one on her left rear cheek is bumpy getting redder; Swelled up like a blister; She mentions that she has developed two blemishes, one on her left rear cheek close to where her mask would be, it is bumpy getting bigger, redder and its swelled up like a blister; This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 26-Mar-2021 and was forwarded to Moderna on 26-Mar-2021.    This spontaneous case was reported by a consumer and describes the occurrence of SKIN DISCOLOURATION (She mentions that she has developed two blemishes, one on her left rear cheek and another on her right cheek), ACNE CYSTIC (Developed blemishes, one on her left rear cheek, it is bumpy getting bigger), ERYTHEMA (Developed two blemishes, one on her left rear cheek is bumpy getting redder), BLISTER (Swelled up like a blister) and RASH PAPULAR (She mentions that she has developed two blemishes, one on her left rear cheek close to where her mask would be, it is bumpy getting bigger, redder and its swelled up like a blister) in an 88-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 042120A and 023M20A) for COVID-19 vaccination.     No concomitant medications were reported.  The patient's past medical history included Aneurysm cerebral (Had cranial aneurisms.).   On 28-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 25-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient experienced SKIN DISCOLOURATION (She mentions that she has developed two blemishes, one on her left rear cheek and another on her right cheek), ACNE CYSTIC (Developed blemishes, one on her left rear cheek, it is bumpy getting bigger), ERYTHEMA (Developed two blemishes, one on her left rear cheek is bumpy getting redder), BLISTER (Swelled up like a blister) and RASH PAPULAR (She mentions that she has developed two blemishes, one on her left rear cheek close to where her mask would be, it is bumpy getting bigger, redder and its swelled up like a blister). At the time of the report, SKIN DISCOLOURATION (She mentions that she has developed two blemishes, one on her left rear cheek and another on her right cheek), ACNE CYSTIC (Developed blemishes, one on her left rear cheek, it is bumpy getting bigger), ERYTHEMA (Developed two blemishes, one on her left rear cheek is bumpy getting redder), BLISTER (Swelled up like a blister) and RASH PAPULAR (She mentions that she has developed two blemishes, one on her left rear cheek close to where her mask would be, it is bumpy getting bigger, redder and its swelled up like a blister) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       No concomitant medications were reported No treatment medications were reported Patient reported side effect with her vaccination. She got her first dose on 28JAN2021 (lot: 042120A, exp: 5JUL2021) and got her second dose on 25FEB2021 (lot:023M20A, exp: 10AUG2021). She mentions that she has developed two blemishes, one on her left rear cheek close to where her mask would be, it is bumpy getting bigger, redder and its swelled up like a blister it appeared around JAN2021.  She has never had something like this occur. States in the past before vaccination she had cranial aneurisms.   Most recent FOLLOW-UP information incorporated above includes: On 16-Jun-2021: Updated mailing address, patient does not use email.Patient seems confused why Safety called her and states she has not previously called Moderna to report an AE.  Agent feels patient may not remember.