Related Experiment Video
Updated: Mar 25, 2026

04:23
A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease
Published on: April 28, 2019
7.3K
Juan-Ron fever: A rare case report
Sourya Acharya1, Samarth Shukla
1Department of Medicine, JN Medical College, DMIMS University, Sawangi (Meghe), Wardha, Maharashtra, India.
Journal of Cancer Research and Therapeutics
|February 17, 2016
Summary
Juan-Ron fever, associated with Rosai-Dorfman disease (also known as sinus histiocytosis with massive lymphadenopathy), presents as a rare cause of fever. This case highlights a 45-year-old male diagnosed with this condition.
Area of Science:
- Rare diseases
- Immunology
- Pathology
Background:
- Rosai-Dorfman disease, or sinus histiocytosis with massive lymphadenopathy (SHML), is a rare idiopathic disorder.
- It is characterized by the proliferation of macrophages within lymph nodes.
- The condition often presents with painless lymphadenopathy.
Observation:
- A 45-year-old male patient presented with bilateral cervical lymphadenopathy.
- The patient also exhibited fever, a less common but significant symptom.
Findings:
- The patient was diagnosed with Rosai-Dorfman disease (SHML).
- This case underscores the association between fever and SHML, referred to as Juan-Ron fever.
Implications:
- This case expands the clinical understanding of Rosai-Dorfman disease presentation.
- Recognizing Juan-Ron fever is crucial for timely diagnosis and management of SHML.
- Further research into the etiology of SHML may elucidate the mechanisms behind associated fever.
Related Concept Videos
Arboviral Encephalitis
19
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
19
Patterns of Fever
4.3K
Before understanding the types and patterns of fever, it is essential to know its phases.
4.3K
Types of Fever
1.4K
Fever can be triggered by several factors, including infections, nervous system disorders, certain cancers, blood diseases like leukemia, embolism, thrombosis, heatstroke, dehydration, surgical trauma, crushing injuries, and allergic reactions.
Here are the different types of fever:
Here are the different types of fever:
1.4K
Diphtheria
40
Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...
40
Methods of reducing fever
1.5K
The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
Pharmacological Methods of Reducing Fever:
1.5K
Viral Meningitis
36
Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
36

