*Psoriasis*
Other factors are less common but also cause scalp itching, including psoriasis. It’s an autoimmune disease that causes red patches and scales.
Health
*Contact dermatitis*
Dr. Chacon also mentions contact dermatitis, an or irritation related to hair products, especially hair dye or shampoo. “Read product labels and know what to look for,” warns Dr. Anna Chacon. She specifically points out sulfates, parabens, alcohol, fragrances, and synthetic dyes, substances that can cause itching, especially if you already have sensitive skin or already have a scalp “If you notice any of the ingredients listed above, especially among the first ones mentioned on the label (which indicates a higher concentration), you might want to consider alternative products. For people with sensitive skin or prone to scalp irritation, choose products labeled hypoallergenic, for sensitive skin, or completely natural,” recommends the specialist, who advises doing a skin patch test before using a hair product for the first time: apply the product to the inner part of your forearm and leave it on for a full day. If you feel irritation or itching in that area, you should not use the product.
*Lice, eczema, hives: other conditions that can cause itching*
To complete the list of that can be responsible for scalp itching, an article published in Harvard Health Publishing, the Harvard Medical School site, also mentions atopic dermatitis, a form of eczema that can also affect the scalp. You also shouldn’t rule out the possibility of a fungal infection, lice, or hives that can appear as a reaction to food, medication, sweat… If your itching is due to this type of condition, you’ll need a medical prescription to adopt an effective treatment.
*Itchy scalp: pollution and stress identified as culprits*
Anatomy
Lastly, some environmental factors can cause scalp itching such as pollution, dry weather, but also stress, which can “worsen physical discomfort.” Don’t hesitate to consult a dermatologist, who will first be able to establish a diagnosis, but also prescribe shampoos adapted to the problem to relieve your scalp. “If scalp itching persists for more than a week, is severe, or is accompanied by symptoms like loss, sores, or a skin rash, it’s time to consult a professional,” Dr. Anna Chacon also recommends.
