My husband was bitten by some type of insect about 10 hours ago on his index finger. His finger is very stor, stiff, a little swollen, and he cannot fully flex the finger. It feels oddly sticky and clammy on the back of his hand from the index finger to his wrist. No shortness of breath, no cramps, no aching muscles, no headache, no dizziness, no nausea. Just a very sore finger. The pain is relieved when he soaks his finger in ice water. Does he need medical assistance - or just need to watch the symptoms?