How do i treat rain spider bite.know that rain spiders is not poisonous but my finger is quite swollen and inflamed. anything i can do?

There is the: significant potential that the bite has become infected and now you need antibiotics. This will not be possible to determine over the internet. You need to have a health care professional see the area and examine it to determine what the next best treatment will be. Don't delay, you wouldn't want to end up losing the finger from infection if it is treatable.

Watch for infection: It you have no pain or discomfort, the major issue is infection. If pus starts to show up, you need to be treated with antibiotic and rarely even surgical removal of the dead tissue from a spider bite. In the meanwhile, keep the area clean and take NSAID for pain if present.