 [ Symptoms ] i was in the woods and now i have an itchy place on my arm that just looks like a scratch its 3 & has a few bumps [ Disease ] i have no way of blindly diagnosing or treating your skin eruption over the internet you would need to have this itchy rash examined i am guessing that you feel you have poison oak or ivy depending on where you live in the world but again this is something that a medical provider would need to see and examine