What should you know about spider bite swollen hand treatment?

Local irritation can cause redness, itching, tenderness, and swelling around a bite. However, a suspected bite may be mistaken for another skin problem, an allergic reaction, or an injury. A swollen hand can also have causes unrelated to a bite; [Hand Swelling](/symptoms/hand-swelling/) explains the broader symptom.

Pain that grows, spreading redness, warmth, drainage, fever, or red streaks can point to infection. A fracture such as [Distal Radius Fracture](/conditions/distal-radius-fracture/) is a separate concern when swelling follows a fall or impact rather than a clear bite.

Wash the area with soap and water, remove rings before swelling increases, and keep the hand raised above heart level when practical. Place a cool, clean compress over the area for short intervals with a cloth between the skin and the cold source. Avoid squeezing, cutting, burning, or applying unknown chemicals to the bite.

Do not handle a spider to identify it. A pharmacist or clinician can advise whether an antihistamine, pain medicine, or other treatment is suitable for you, especially if you are pregnant or take regular medicines.

Call emergency services for trouble breathing, swelling of the lips, tongue, or throat, faintness, or widespread hives. Seek same-day care for rapidly worsening hand swelling, severe pain, blistering, darkening skin, fever, pus, spreading redness, loss of sensation, or difficulty moving the fingers.

Ask whether the appearance fits a bite, how to track the edge of redness, which medicines are safe for you, and whether the hand needs treatment for infection or imaging after an injury. Ask when a review is needed if swelling does not settle.