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Itching and Redness
Excessive itching and redness on your scalp or other areas where the shampoo was applied is one of the primary symptoms of a shampoo allergy. This inflammation is caused by your body's adverse reaction to certain ingredients in the product.
Hives or Rash
Hives or a rash on your scalp, neck, and ears can indicate an allergic reaction to shampoo. They appear as red, inflamed, and bumpy or slightly scaly patches on your skin. They may also be itchy.
Dandruff and Flaking
While dandruff can occur due to a variety of reasons, excessive dandruff or flaking could be a symptom of a shampoo allergy. Your scalp may have an allergic reaction to the shampoo, leading to an overproduction of skin cells and causing them to peel off as flakes.
Swelling
If you experience swelling in certain areas, particularly around the face, neck, and eyes, after using shampoo, it could indicate an allergic reaction. This swelling is a common bodily response to allergens.
Difficulty Breathing
People with a severe shampoo allergy might experience difficulty breathing after exposure to the allergic substance. This could manifest as wheezing, shortness of breath, chest tightness or pain, or a feeling of constriction in the throat.
Eye Irritation
Eye irritation such as redness, itching, tearing, and burning in the eyes can be a symptom of shampoo allergy, particularly if shampoo gets into your eyes during washing.
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