Diseases & Conditions
Rectal Gonorrhea
Rectal gonorrhea is a sexually transmitted infection caused by Neisseria gonorrhoeae, a Gram-negative diplococcus. It primarily af…
Rectal Chlamydia Trachomatis Infection
Rectal chlamydia trachomatis infection is a sexually transmitted infection (STI) caused by the bacterium Chlamydia trachomatis, af…
Recrudescent Typhus
Recrudescent typhus, also known as Brill-Zinsser disease, is a late relapse of epidemic typhus caused by Rickettsia prowazekii. Th…
Raynaud's Phenomenon
Raynaud's phenomenon is a vascular disorder characterized by episodic constriction of small arteries, leading to reduced blood flo…
Rat-Bite Fever
Rat-bite fever is a bacterial infection that can result from a bite or scratch from a rat or other rodent. The condition is rare, …
Rapid Cycling Bipolar Disorder
Bipolar disorder is a mental health condition characterized by extreme mood swings, including episodes of mania and depression. Wh…
Raised Seborrheic Keratosis
Seborrheic keratosis is a non-cancerous (benign) skin tumor that appears as a raised, wart-like lesion. Often characterized by a r…
Radiation-Induced Mucositis
Radiation-induced mucositis is a common and debilitating complication resulting from radiation therapy, especially in the treatmen…
Rabies Vaccination
Rabies remains one of the most lethal viral infections known to humanity, characterized by a nearly 100% fatality rate once clinic…
Rabies Postexposure Prophylaxis
Rabies postexposure prophylaxis (PEP) is an urgent, life-saving intervention administered to individuals exposed to the rabies vir…
Q Fever Endocarditis
Q fever endocarditis represents a severe and life-threatening manifestation of chronic Coxiella burnetii infection. It predominant…
Q Fever
Q fever is an acute or chronic zoonotic infection caused by the bacterium Coxiella burnetii. It primarily affects individuals expo…