I was bitten by a black widow a week ago. Within 24 hours the bite on my arm was extremely painful, swollen and had two bright red, hard and painful streaks running from the bite on my forearm to my armpit. When I got in to see the doctor, my blood pressure was elevated, I had a slight fever, my arm was alternating between feeling numb, burning, and having muscle cramps. He prescribed me 300mg of clindamycin every 6 hours for 10 days. The infection seems to be gone, with only mild redness remaining. However, I continue to have intermittent numbness and pain in the arm, mixed with overall fatigue. Any idea how long these symptoms may last? Is there any treatment for them?