While doing some housework, cleaning out a closet, or even just clearing some leaves from the garden, you suddenly feel like something is stuck in your skin. It turns into a small red bump and hurts a little. Maybe this has happened to you too. Often, the first thing that comes to our mind at a time like this is the fear of, "Oh, did a spider bite you?" So, should we really be afraid if a spider bites us? Let's talk about this today.
Simply put, most spider bites are not dangerous. In fact, almost all spiders in the world produce venom. But they don't use that venom to attack humans. It's a weapon they use to paralyze and capture their food, which is small animals like insects. Most spiders' fangs aren't strong enough to pierce our skin. They rarely bite humans. That's only if they feel threatened or in danger. Like if we accidentally pinch them.
When should you be concerned about a spider bite?
Although we don't see them very often in Sri Lanka, there are spider species in some parts of the world that can be dangerous to humans. It is important to be aware of this, because bites from these spiders require medical treatment. These types of spiders are especially common in countries like America.
The most important thing is, if you get bitten by a spider, to remember what the spider looks like, if possible. Or if you can carefully take a photo of the animal, it will be very helpful to the doctor who is treating you.
The table below shows information about some of the most dangerous spider species in the world.
| Spider species | How to identify? | Frequently seen areas |
|---|---|---|
| Black Widow | It is black in color. There is a red hourglass-shaped mark under the abdomen. | In western and South America, near logs, fences, and buildings. |
| Brown Recluse | It is brown in color. It has a dark mark on its head that resembles the shape of a violin. | In dry, protected places in America (wood piles, rock piles, inside shoes). |
| Hobo Spider | Brown in color. Has a gray 'V'-shaped pattern on the abdomen. Makes funnel-shaped webs. | In damp, dark basements in the Pacific Northwest of America. |
These spiders are rare in Sri Lanka. However, the bites of the spiders that we often see around our homes are usually harmless. For example, if you get bitten by a jumping spider, you may experience some redness and pain, but it is not a dangerous condition.
What are the symptoms of a dangerous spider bite?
Symptoms can vary depending on the type of spider, so it's important to be aware of the symptoms of bites, especially from the dangerous spiders we discussed earlier.
| Spider type | Main symptoms |
|---|---|
| Black Widow |
|
| Brown Recluse |
What does a typical spider bite look like?
Most of the time, all you'll see is a small mark on the skin, a little swelling, and some redness. This usually heals within a few days.
What to do immediately if bitten by a spider (first aid)
Okay, now let's see what you should do if you get bitten by a spider. Following these steps can help prevent infection and reduce pain.
1. Clean the wound: Wash the bite area thoroughly with soap and lukewarm water.
2. Apply ice: Wrap a few ice cubes in a clean cloth and apply it to the bite for about 10-15 minutes. This will reduce swelling and pain.
3. Elevate: If the bite is on an arm or leg, keep the area elevated above the heart as much as possible. This will also help control swelling.
4. Painkillers: You can take a general painkiller like paracetamol.
5. For itching: If there is itching, you can take an antihistamine as prescribed by your doctor.
6. Don't scratch the wound: Scratching the wound increases the risk of infection.
Never try to suck the venom out of the bite or cut the wound. This will only make the situation worse.
When to see a doctor immediately
Although a common spider bite can be treated at home, if you have any of the following symptoms, go to the nearest hospital's Emergency Department (ETU) immediately.
- If you feel difficulty breathing or chest tightness.
- If your face, lips, or throat swells.
- If you have severe muscle spasms or unbearable pain.
- If you experience rapid heartbeat (palpitations) or chest pain.
- If the bite site is oozing pus, spreading redness, or developing a fever (these are signs of infection).
- If you have nausea, vomiting , or a severe headache .
- If you are sure that the bite was caused by a dangerous spider (e.g. Black Widow).
In such a situation, you can also call the National Poison Information Center at the Colombo National Hospital for advice. The doctors will obtain further information from there if necessary.
How to protect yourself from spider bites?
Although we can't completely avoid spiders, there are a few things we can do to reduce the risk of being bitten.
- Keep your home and garden clean: Always remove places where spiders can hide, such as old boxes, wood piles, and piles of leaves.
- Work carefully: Wear gloves when working in the garden, clearing out an attic, or clearing out a storage room.
- Check shoes: Before putting on shoes or boots, shake them well to see if there are any animals inside.
- Take care of your clothes: Shake out clothes that have been left outside to dry before wearing them.
- Check the bedding: It's a good habit to shake out your sheets and pillowcases before going to bed.
Spiders are a very important species in the ecosystem. They help us by controlling insects. So don't be in a hurry to kill a spider when you see one. They won't attack us unless we threaten them.
Take-Home Message
- Most spider bites are not dangerous. They only cause minor redness, swelling, and pain.
- If you get bitten by a spider, wash the area thoroughly with soap and apply ice.
- If you experience severe symptoms such as difficulty breathing, severe pain, muscle twitching, or facial swelling, go to a hospital immediately.
- Use protective equipment such as gloves when working in hazardous areas (e.g. clearing firewood).
- If you are in doubt about your symptoms or if your condition worsens, be sure to see your doctor.
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