“This one centimeter-long worm-like creature was found in my mother’s tub today and on a few previous occasions”, says this reader about the segmented, green-gray creature in the photograph below. Our reader’s mother is concerned that these are pinworms, and our reader wonders if we can verify whether or not these are millipedes, centipedes or indeed pinworms.

Pinworms, also known as pin worms, or just pin worm, are a tiny parasitic worm which lives in the human intestinal tract. Pin worm infections are thought to infect as many as 400million people worldwide, and 40million in the United States alone. Pin worms often affect children.

“Does this look like the unknown fibers/worms everyone is dealing with that sting, create slots of dust, and move through fabrics?” asks Teddy in his submission regarding the thin, translucent object pictured below. “Or are these dead pinworms?” To start with, we have to say that we are aware of the “unknown fibers” or worms that “everyone” seems to be finding, and after having a quick look on the web, we are not encountering stories about worms like the one Teddy found. That said, we have gotten submissions in the past about worms that resemble this one, and in every case we have maintained that we do not know what it could possibly be. On top of that, just like in Teddy’s case, a lot of our readers who have asked about worms resembling this one have quoted concerns about parasites, which is the main reason we have not identified the organisms that look like this.

“What is this?” asks this reader in her submission regarding the brown, segmented, worm-like creature pictured below. “We found some small doughnut shaped eggs in our sandbox and we watched one of them hatch into an inch-long caterpillar! Here is a photo of the egg and one of the hatched larva!” Based on the excellent photo of the critter itself, we would say these are tomato pinworms, a type of moth caterpillar that, as their name suggests, eat tomatoes. They also eat potatoes and eggplants, as well as different types of weeds. With that said, tomato pinworm eggs do not look like the ones our reader found. The doughnut shape reminds us more of gall wasp eggs. However, gall wasp larvae do not look like the creature our reader found: they are white in color.

“I found this worm on the hardwood floor in the living room”, states this reader in her submission regarding the white worm-like creature pictured below. “It’s just under an inch in length. Very thin. One end appears to have a darker end (possibly the eyes/head). I recently got a rabbit. Thought maybe it was a pinworm/threadworm but haven’t seen anything like this before. The rabbit’s cage was clean with no signs of worms.” Now, a thin, white larva with a brown head is about as generic of a description of a worm-like creature as you can get, but nonetheless we have identified this as a stiletto fly larva.

“Can a person’s gut be so full of, like, pinworms […] that they come out of the skin and nose and start biting the skin on the outside?” asks this reader in his submission. He seems concerned about his eating habits and the symptoms he has been experiencing.

“Is this a parasite?” asks this reader about the cottony, white substances pictured below. Our reader, who is based in Modesto, California thinks this substance looks like an “aspicu”, which we assume refers to the aspiculurus tetraptera, which is a type of pinworm.

“I have worms but they are all different looking,” says this reader, who seems to be struggling with some sort of medical condition. The worms are on her scalp, in her eyes and both her and her boyfriend have taken pinworm medication to try and counteract them.

Many a dangerous worm exists in this world, many of which are overestimated, but just as many of which are severely underestimated. This article will outline some of the worms that you may encounter that pose some level of threat toward yourself and others. For the sake of organizing the content of this article, we will split this up into three categories, namely parasites, venomous worms and marine worms (many of which you will never have to actually worry about).

Minuscule white worms were found by this reader on her coffee maker when she was preparing her coffee for the next day. She found another of the worms in a glass of tap water she had left out overnight, this one being dead, and wonders if we can tell her what these worms are.

A mother’s son in South Carolina is reportedly infested with parasitic worms, and was turned away by medical professionals. She wonders not if we can identify the worm for her, but simply if any of our readers have felt like this before in the queries they send in.

A reader recently informed us that she found a worm in her sink after blowing her nose, and has become paranoid as to whether it came from her or not. She describes the worm as being a wriggling, tiny thread; it was more than 0.5cm (0.2-inches) long and about 0.1cm (0.04-inches) wide.

A man recently sent in this photo of two worms he found after going to the toilet. After being very bloated for a couple of weeks and showing other symptoms, our reader went to his doctor who told him they could be pinworms. However, our reader does not think they look like pinworms, as he has had those in the past and they looked different.

Recently, a reader wrote to us with one of the simplest questions we’ve ever received: what do pinworms (sometimes spelled “pin worms” – incorrectly) look like? To call this question simple is not to call it bad or insignificant – it’s important to know what pinworms look like if you suspect that you (or your child) have pinworms (they only afflict people), and in any case, we rather enjoy an easy question. Since the reader was exclusively interested in the appearance of pinworms, we’ll limit our remarks to this topic. If you would like to know more about these bothersome creatures in general, we encourage you to check out one of our previous articles about pinworms.

According to the World Health Organization (WHO), more than 2 billion people around the world are infected with parasitic worms. The condition causes severe illness in roughly 300 million people each year.

Parasitic worms belong to one of four groups including Cestoda, Nematoda, Protozoa, or Trematoda. Some parasitic worms are microscopic while others can be identified fairly easily with one quick look.

The most common pinworm symptom is itching around the anus. The itching becomes more intense at night when the female pinworm lays her eggs on the skin of infected person.

Pin worm is the most prevalent parasite infection in the United States and Europe today. While pin worm is most commonly found in kids, it can occur in adults as well.

The pin worm belongs to the family Oxyuridae, order Oxyuroidea, and the phylum Nematoda. Pin worms are classified as Enterobius vermicularis. Threadworms are also classified as Enterobius vermicularis. Pin worms are also called “seatworms” and they have several spellings, including “pinworm” and “pinworms.”

Pin worms or “pinworms” belong to the family Oxyuridae, order Oxyuroidea, and the phylum Nematoda. The pin worm is classified as Enterobius vermicularis. Threadworms are also classified as Enterobius vermicularis.