brain fog; muscle joints (reports it feels like an “ice pick” and described as a “tearing sensation if he overstretches in biceps and triceps); runny nose; headache; diarrhea; muscle joints (reports it feels like an “ice pick” and described as a “tearing sensation if he overstretches in biceps and triceps); Initial information received on 19-Dec-2024 regarding an unsolicited valid non-serious case received from a Patient. This case involves a 62 years old male patient who experienced brain fog, muscle joints (reports it feels like an “ice pick” and described as a “tearing sensation if he overstretches in biceps and triceps), runny nose, headache and diarrhea after receiving Meningococcal A-C-Y-W135 (T Conj) Vaccine [Menquadtt]. The patient’s past medical history, medical treatment(s), vaccination(s) and family history were not provided. On an unknown date, the patient received a dose 1 of suspect Meningococcal A-C-Y-W135 (T Conj) Vaccine Solution for injection (lot number, dose, strength and expiry not reported) via unknown route in unknown administration site as prophylactic vaccination. There will be no information on batch number and expiration date corresponding to the one at time of event occurrence. On an unknown date the patient developed brain fog, muscle joints (reports it feels like an “ice pick” and described as a “tearing sensation if he overstretches in biceps and triceps) (muscle strain) (myalgia), runny nose (rhinorrhoea), headache and diarrhea (diarrhoea) (unknown latency) following the administration of Meningococcal A-C-Y-W135 (T Conj) Vaccine. Action taken: not applicable. The patient was treated with Iptacopan Hydrochloride Monohydrate (Fabhalta) for Headache, Rhinorrhoea and Diarrhoea. At time of reporting, the outcome was Unknown for the events.