Hi.. Thanks for the query.. From your explanation it looks like you have developed poison ivy rash.. Redness, soreness and itching is an outcome of allergic reaction only.. First of all start taking anti histamines like Benadryl or Levocetrizine to reduce redness and itching.. Do cool compresses over the rashes.. Apply a steroid ointment like Triamcinolone Acetonide and at times you can also be advised oral steroid pills for quick relief.. If there is pain anti inflammatory painkillers like Ibuprofen can relieve.. Avoid scratching it to avoid infection. If there is still no improvement consult an Emergency room and get evaluated.. Hope this helps. Regards.