How do you treat a spider bite. have taken 8 benadryl (diphenhydramine) since this morning ?

Ice and time.: There is no recommended treatment but you might want to put ice on it. It has a odd method of healing and sometimes surrounding tissue may necrose. You will want to see your doctor tomorrow for first hand advice and can continue the Benadryl (diphenhydramine) . for an average size person you most likely do not want to exceed 200 mg per day. Taken as 50 mg increments.

Depends: If you have been bitten by a brown recluse or a black widow see a doctor immediately. If your skin is changing color, looking necrotic, or swelling out of proportion see a doctor immediately. Do not hesitate to get help when some spider bites can be so dangerous. Hope you do well.

Not a spider bite: I doubt very much this is a 'true' spider bite. In every case I've seen (maybe 100 by now), there is NO SPIDER upon further questioning. This could be an allergic reaction to an insect bite, a carbuncle (giant boil), or some other skin problem. Since you've taken all that benadryl (diphenhydramine) -it's probably the first. Best to show a doctor though who can figure it out. Try cold compress, and reduce benadryl (diphenhydramine).

SPIDER BITE: IF IT ITCHES, APPLY AN OVER-THE-COUNTER HYDROCORTISONE CREAM THREE TIMES A DAY. IF IT PERSISTS, SEE A DERMATOLOGIST

Depends: Some spider bites (Black widow, brown recluse) can cause potentially life-threatening reactions requiring immediate medical attention, others a course of antibiotic because the bite often gets infected, still others removal of the dead tissue, yet some may just take time to heal without any treatment.

Ok: if no general symptoms.watch for general fatigue if so go to a hosp could be fatal sometimes. i had i pt who died in 3 weeks.

Wrong question: Venomous spiders are extremely rare in Ohio and are not indigenous to your area. Neither Benadryl (diphenhydramine) nor any other antihistamine is of any use for black widow or brown recluse spider attacks. Unless you bring the spider to an EXPERT for identification, assume you have SOMETHING ELSE. The real question becomes "what is your actual diagnosis?" Since you fail to describe it, no diagnosis is possible thi