patient reports her left arm was sore immediately after receiving the injections; flu shot and the RSV vaccine (could not confirm the product was Arexvy) both in her left arm and the patient reported that her left arm on the same day; she is experiencing tingling in her left pinky and ring fingers, all the way to her wrist of her left hand; the patient reports her left arm was sore immediately after receiving the injections, stayed red all week, and is still a little sore and a little red; her blood work shows low platelets; This non-serious case was reported by a consumer via call center representative and described the occurrence of pain in arm in a 73-year-old female patient who received RSVPreF3 adjuvanted (Arexvy) for prophylaxis.   Co-suspect products included Flu unspecified (Flu vaccine) for prophylaxis.   On 18-SEP-2023, the patient received Arexvy (left arm) and Flu vaccine (left arm). In SEP-2023, an unknown time after receiving Arexvy and Flu vaccine, the patient experienced tingling (Verbatim: she is experiencing tingling in her left pinky and ring fingers, all the way to her wrist of her left hand), erythema of extremities (Verbatim: the patient reports her left arm was sore immediately after receiving the injections, stayed red all week, and is still a little sore and a little red) and platelets decreased (Verbatim: her blood work shows low platelets). On 18-SEP-2023, the patient experienced pain in arm (Verbatim: patient reports her left arm was sore immediately after receiving the injections) and wrong technique in drug usage process (Verbatim: flu shot and the RSV vaccine (could not confirm the product was Arexvy) both in her left arm and the patient reported that her left arm on the same day).The outcome of the pain in arm, tingling and erythema of extremities were not resolved and the outcome of the platelets decreased and wrong technique in drug usage process were unknown.   It was unknown if the reporter considered the pain in arm, tingling, erythema of extremities and platelets decreased to be related to Arexvy and Flu vaccine.  It was unknown if the company considered the pain in arm, tingling, erythema of extremities and platelets decreased to be related to Arexvy and Flu vaccine.   Additional Information: GSK Receipt Date: 22-SEP-2023 The case was reported by the patient. The reporter reported that her pharmacist administered both a high dose flu shot for seniors (unknown product information) and the RSV vaccine (could not confirm the product was Arexvy) both in her left arm and the patient reported that her left arm was sore immediately after receiving the injections, stayed red all week and was still a little sore and a little at the time of reporting. The patient also reported that she was experiencing tingling in her left pinky and ring fingers, all the way to her wrist of her left hand, which was happening day and night and still occurring at the time of reporting. The patient had no paperwork and could not confirm she received the Arexvy vaccine, she just said RSV but her pharmacy told her to call GlaxoSmithKline.  The patient also reported that she had lab work drawn at the hospital two days after receiving the 2 vaccines and her blood work showed low platelets. The reporter consented to follow up.