<s>[INST] Hello Doctor, My mom has a problem of increasing TLC when she take any strong medicine her TLC increasing as a result she had a fever of 100C. Plz doctor help us and she also suffering from Thyroid problem and RA Factor positive past 15-20 years. Waiting for ur reply [/INST] HI Thanks for posting your query to Healthcaremagic .    It's not high TLC causing the fever but the other way , Fever causing high TLC . Fever is most of the time due to infections . A high TLC with fever points towards Bacterial Infection .    She needs to be tested to detect which bacteria is infecting her . I advise to test CBC, IgM Typhi Dot , Smear for Malaria , Urine routine and revert back with reports . Ask your doctor to start an antibiotic therapy for her . Any further clarifications feel free to ask . Regards. </s>