Article
- Author:
- Dirk M. Elston, MD
Publish date: August 11, 2021
Sea cucumbers are sausage-shaped aquatic creatures living on the ocean floors across the world. They are considered a food delicacy in many countri...
Article
- Author:
- Dirk M. Elston, MD
Publish date: June 2, 2021
Phacomatosis pigmentokeratotica (PPK) is characterized by the coexistence of speckled lentiginous nevus and nevus sebaceous.
Article
- Author:
- Dirk M. Elston, MD
Publish date: March 12, 2021
A 52-year-old woman with a history of rheumatoid arthritis presented with a rash on the palms and soles of 7 years' duration that started around th...
Article
- Author:
- Dirk M. Elston, MD
Publish date: February 4, 2021
A 25-year-old man presented with a rash on the right hand, chest, abdomen, right thigh, and ankles of 2 weeks’ duration. He reported that the erupt...
Article
- Author:
- Dirk M. Elston, MD
Publish date: January 5, 2021
Sponges from the phylum Porifera exist throughout the world in marine and freshwater environments. Although many encounters with humans are benign,...
Article
- Author:
- Dirk M. Elston, MD
Publish date: November 5, 2020
The human flea, Pulex irritans, is a vector for various human diseases including the bubonic plague, bartonellosis, and ricketts...
Article
- Author:
- Dirk M. Elston, MD
Publish date: September 11, 2020
The oriental rat flea (Xenopsylla cheopis) is an ectoparasite of small mammals and a vector of many diseases for which humans are incidental...
Article
- Author:
- Dirk M. Elston, MD
Publish date: July 8, 2020
Megalopyge opercularis is the most widely distributed caterpillar species in the Americas, and envenomation by it can occur year-roun...
Article
- Author:
- Dirk M. Elston, MD
Publish date: May 6, 2020
Stings from Centruroides exilicauda and Centruroides sculpturatus have been shown to cause fatality...
Article
- Author:
- Dirk M. Elston, MD
Publish date: April 29, 2020
A 28-year-old man with a history of hyperimmunoglobulinemia E syndrome (previously known as Job syndrome), coarse facial features, and multiple ski...
Article
- Author:
- Dirk M. Elston, MD
Publish date: April 7, 2020
The expanding range of tick-borne diseases is a growing problem worldwide. Climate change plays a preeminent role in the expansion of tick species,...
Article
- Author:
- Dirk M. Elston, MD
Publish date: March 25, 2020
A 34-year-old man presented for evaluation of a slowly growing group of firm white bumps on the penis. The lesions were nontender and asymptomatic....
Article
- Author:
- Dirk M. Elston, MD
Publish date: March 5, 2020
Compared to head and pubic lice, body lice carry increased morbidity in the form of greater body surface area involvement, possible infectious dise...
Article
- Author:
- Dirk M. Elston, MD
Publish date: January 7, 2020
Three types of reactions can be seen after a vespid sting: uncomplicated local reactions, large local reactions, and systemic reactions. Although m...
Article
- Author:
- Dirk M. Elston, MD
Publish date: December 6, 2019
Blister beetles can cause a blistering dermatitis in humans by emitting the substance cantharidin, which has been pharmologically used as a vesican...
