Itchy skin after swimming may be caused by contact dermatitis, skin infections and other conditions, need to clarify the cause of the disease, and then treatment, common treatment drugs are cetirizine, mupirocin cream and so on. 1. Contact dermatitis: when the symptoms of contact dermatitis such as red pimples and itching appear after swimming, it may be related to the disinfectant in the swimming pool, it is recommended to get out of the pool immediately, rinse repeatedly with water, and the symptoms will be alleviated to a certain extent; if the symptoms of itching are serious and not alleviated for a long period of time, it can be treated with antihistamine drugs such as cetirizine and loratadine. 2. Skin infections: Due to long-term immersion in water, the barrier function of the skin is weakened, easy to bacteria, viruses, fungi and other germs infections, which may lead to impetigo, herpes, ringworm and many other skin diseases, different germs lead to different treatments for skin diseases, common treatment drugs are mupirocin cream, acyclovir, buprenorphine and so on. It is recommended to swim in a regular clean swimming pool, use water to wash the skin thoroughly after swimming, if the skin itching, pimples, blisters and other symptoms, you need to consult a doctor in a timely manner, under the guidance of a doctor to standardize the treatment, to avoid private medication, so as not to delay the condition.