Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. According to the NHS, the common side effects of atorvastatin include nosebleeds, sore throat, runny or blocked nose, headache, and an upset stomach. However, the NHS does not mention any specific allergic reactions to atorvastatin [2].

Medical News Today also lists common side effects of atorvastatin, including allergic reactions such as hives, itching, and difficulty breathing. However, the article does not mention whether atorvastatin can worsen existing allergy symptoms [3].

It is important to note that individual reactions to medications can vary, and some people may experience allergic reactions to atorvastatin. If you are experiencing allergy symptoms while taking atorvastatin, it is important to speak with your doctor as soon as possible.

In conclusion, while atorvastatin may cause allergic reactions in some people, there is no clear evidence that it can worsen existing allergy symptoms. If you have concerns about the effects of atorvastatin on your allergies, it is best to consult with your doctor [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/
[3] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects