Related Experiment Video
Updated: Mar 7, 2026

Recognition of Epidermal Transglutaminase by IgA and Tissue Transglutaminase 2 Antibodies in a Rare Case of Rhesus Dermatitis
Published on: December 15, 2011
[Clinical symptoms in IgA deficiency].
Flavio Augusto De Oliveira-Serra1, Tainá Mosca, Maria da Conceição Santos de Menezes
1Santa Casa de São Paulo, Facultad de Ciencias Médicas. São Paulo, Brasil. taina.mosca@gmail.com.
Selective IgA deficiency, the most common immunodeficiency, often presents with allergic conditions like asthma. Total IgA deficiency also shows increased infections, highlighting the need for better understanding of its clinical manifestations.
Area of Science:
- Immunology
- Clinical Medicine
- Allergy and Immunology
Background:
- Selective IgA deficiency is the most prevalent primary immunodeficiency.
- Early diagnosis and management are crucial for improving patient quality of life.
- Further research into the clinical manifestations of IgA deficiency is warranted.
Purpose of the Study:
- To investigate and determine the clinical manifestations associated with IgA deficiency.
Main Methods:
- A cross-sectional, retrospective, and exploratory study design was employed.
- Medical records of 39 patients diagnosed with IgA deficiency were analyzed.
Main Results:
- Allergic rhinoconjunctivitis and allergic asthma were the primary clinical manifestations in both partial and total IgA deficiency.
- Patients with total IgA deficiency exhibited a statistically significant higher incidence of infection-related rhinosinusitis, tonsillitis, and conjunctivitis (p < 0.05).
Conclusions:
- The main clinical signs of IgA deficiency include allergic rhinoconjunctivitis and allergic asthma.
- Total IgA deficiency is associated with a significantly greater risk of specific infections compared to partial IgA deficiency.
Related Concept Videos
Gastritis III: Clinical Manifestations and Management
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Gastritis-II: Pathophysiology
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Other Disorders of Digestive System
Transcytosis of IgG
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...

