Recurrent Vulvovaginal Candidiasis
Recurrent vulvovaginal candidiasis (RVVC) is defined as four or more documented episodes of symptomatic vulvovaginal candidiasis within a 12-month period. It affects millions of women…
Recurrent Aphthous Stomatitis
Recurrent aphthous stomatitis (RAS) is a common oral mucosal disorder characterized by recurring, painful ulcers, typically on non-keratinized oral tissues. Though benign and non-contagious, RAS…
Rapid Cycling Bipolar Disorder
Bipolar disorder is a mental health condition characterized by extreme mood swings, including episodes of mania and depression. While the disorder is widely recognized, there…
Raised Seborrheic Keratosis
Seborrheic keratosis is a non-cancerous (benign) skin tumor that appears as a raised, wart-like lesion. Often characterized by a rough, scaly surface, seborrheic keratosis is…
Q Fever Endocarditis
Q fever endocarditis represents a severe and life-threatening manifestation of chronic Coxiella burnetii infection. It predominantly affects individuals with pre-existing heart valve abnormalities, prosthetic valves,…
Pyridoxine-Dependent Seizure
Pyridoxine-dependent seizure (PDE) is a rare, autosomal recessive genetic disorder characterized by recurrent seizures that are unresponsive to conventional antiepileptic medications but dramatically responsive to…
Pyoderma Gangrenosum
Pyoderma gangrenosum is a rare, inflammatory skin disorder characterized by painful, rapidly progressing ulcers with undermined borders and surrounding erythema. Although its exact cause remains…
Pure Red Cell Aplasia Associated with Chronic Lymphocytic
Pure red cell aplasia (PRCA) is a rare hematologic syndrome characterized by severe normocytic anemia, reticulocytopenia, and selective absence of erythroid precursors in the bone…
Pure Red Cell Aplasia (PRCA)
Pure red cell aplasia (PRCA) is a rare hematologic disorder characterized by a severe reduction or complete absence of erythroid precursors in the bone marrow,…
Punctate Keratitis
Punctate keratitis is a clinical condition marked by inflammation of the cornea, specifically presenting as multiple small epithelial erosions or opacities. These punctate lesions are…