Best treatment for poison ivy?

Steroids (cortisone): Poison ivy or poison oak rashes are allergic reactions caused by contact with the plants. The plant sap can be on clothes, bedding, car seats, etc..., so thorough cleaning is needed. Treatment is with steroid creams in mild cases but oral steroids in moderate or severe cases. Oral antihistamines like Claritin, Zyrtec, or Benadryl (diphenhydramine) help decrease itching. A doctor can prescribe steroids if needed.

Steroids: If you clearly have allergy to poison ivy and have contact dermatitis to it, you might need oral steroids. At the very least, you will need topical steroids and oral antihistamines. Do not apply topical antihistamines.

Anti itch: Hydrocortisone 1% available otc can be used to decrease the itch. Sometimes, a sedating anti histamine like Benadryl (diphenhydramine) can also make the itching less pronounced.

Poison ivy: There are specific products that you can buy that will wash the Urushiol off. Some options of treating poison ivy include calamine lotion, oatmeal soaks, hydrocortisone cream and antihistamines. Anything which has touched urushiol from the poison ivy needs to be cleaned (clothes, shoes, gear etc.) Oral steroids are sometimes indicated.