The side effects of ketoconazole shampoo are usually redness of the scalp, itching and burning of the scalp. The dangers of ketoconazole shampoo usually include hair loss, change in hair color and texture, rashes, dry skin and hives. 1. Side effects of ketoconazole shampoo: Since ketoconazole shampoo is a topical shampoo, it is an anti-fungal drug as well as a shampoo containing hormones. The potent nature of ketoconazole can cause unavoidable resistance at the wash location, so side effects such as redness, itching, and burning of the scalp can occur. 2. Dangers of Ketoconazole Shampoo: Ketoconazole shampoo is mainly used for the treatment and control of dandruff, and the associated flaking and scaling of the scalp. It can also spread the shampoo to the skin when used in areas where the tissues are more sensitive and weak, so it can cause dry skin, rashes and other hazards. Parents are advised not to blindly use ketoconazole shampoo for children, and it is contraindicated for pregnant and lactating women. It is recommended that patients with symptoms of irritation after use, stop using it immediately, if there is still no improvement after stopping use please go to the hospital in time.