Lipitor is a medication that contains the active ingredient atorvastatin, which is commonly prescribed to lower cholesterol levels and reduce the risk of heart disease. While it is generally well-tolerated, some individuals may experience allergic reactions to Lipitor.

According to the sources provided, common symptoms of Lipitor allergies can include:

1. Rash: A skin rash is a common symptom of an allergic reaction to Lipitor. It may appear as red, itchy, or swollen patches on the skin.

2. Hives: Hives are raised, itchy welts on the skin that can vary in size and shape. They may be red or pale in color and can appear suddenly.

3. Itching: Generalized itching or a feeling of itchiness on the skin can be a symptom of an allergic reaction to Lipitor.

4. Swelling: Lipitor allergies can cause swelling, particularly in the face, lips, tongue, or throat. This can lead to difficulty breathing or swallowing, which requires immediate medical attention.

5. Difficulty breathing: In severe cases, an allergic reaction to Lipitor can cause difficulty breathing or shortness of breath. This is a serious symptom that requires immediate medical attention.

It is important to note that if you experience any of these symptoms while taking Lipitor, you should seek medical attention promptly. Your healthcare provider will be able to evaluate your symptoms and determine the appropriate course of action, which may include discontinuing the medication and prescribing an alternative.

It is also worth mentioning that these symptoms may not be exclusive to Lipitor allergies and can be caused by other factors. Therefore, it is crucial to consult a healthcare professional for an accurate diagnosis.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] NHS. Atorvastatin: Side effects. Retrieved from: https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/
[3] Mayo Clinic. Atorvastatin (Oral Route): Side Effects. Retrieved from: https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003