Related Experiment Video
Updated: Feb 13, 2026
09:53
Measuring Associative Learning in Chemotaxis of the Nematode Caenorhabditis elegans
Published on: June 17, 2025
664
Association between urticaria and nematode infections.
Paola L Minciullo1, Antonio Cascio2, Sebastiano Gangemi1
1From the School and Division of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University Hospital "G. Martino," Messina, Italy.
Allergy and Asthma Proceedings
|March 2, 2018
Summary
Urticaria can be linked to nematode infections, though a direct cause is often unclear. Physicians should consider parasite testing based on individual patient factors, not routine screening.
Area of Science:
- Medical Parasitology
- Dermatology
- Immunology
Background:
- The link between parasitic infections and urticaria has been recognized for over a century.
- Prevalence of parasitic infections in chronic urticaria (CU) ranges widely, and urticaria can occur in patients with parasitosis.
- Nematodes are a significant group of helminths affecting millions globally.
Purpose of the Study:
- To compile and review existing literature and case reports on urticaria associated with nematode infections.
Main Methods:
- A comprehensive literature search was conducted across scientific databases.
- The search covered publications from January 1960 to May 2017.
Main Results:
- Numerous nematode species, including Anisakis simplex, Ascaris spp., and Toxocara spp., have been linked to urticaria and/or angioedema.
- Pathogenesis remains largely unexplained; some cases involve direct presence of the worm, while others suggest IgE-mediated allergic reactions.
- Associations for some nematodes were anecdotal, with limited reported cases.
Conclusions:
- Establishing a definitive causal link is challenging, often relying on symptom improvement post-treatment.
- Helminths are a rare cause of isolated urticaria.
- Parasitosis is considered a rare cause of CU in developed countries; parasite testing is a physician's decision based on patient specifics.
Related Concept Videos
01:27Associative Learning
1.5K
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
1.5K
01:21Association Areas of the Cortex
9.5K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
9.5K
01:11Genome-wide Association Studies-GWAS
15.8K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
15.8K
01:23Somatosensory, Motor, and Association Cortex
2.8K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
2.8K
01:20Infection
12.8K
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
12.8K
01:26Stages of Infection
65.5K
Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
65.5K