Cat scratch fever (cat scratch disease, inoculation lymphoreticulosis, subacute regional lymphadenitis) is an infectious disease of children and adolescents, caused by the bacterium Bartonella henselae.
The signs and symptoms of the disease are mild to moderate and are usually self-limiting. They develop after an…
Lymphadenitis is an infection of one or more lymph nodes and a common feature in a variety of disorders.
In some cases, lymphadenitis remains asymptomatic. When symptomatic, the lymph node may be swollen and palpable with pain and tenderness. Neck stiffness is a common symptoms with cervical lymph node enlargement…
Castleman disease, also known as angiofollicular lymph node hyperplasia and giant lymph node hyperplasia, represents a group of non-neoplastic lymphoproliferative disorders sometimes associated with viral (human herpesvirus 8 and human immunodeficiency virus) infections. This condition has two subtypes, unicentric and…
Bubonic plague is a rare, contagious disease caused by the bacterium Yersinia pestis, characterized by painful buboes in the axilla, groin or neck, high fever, petechial hemorrhage and delirium.
Symptoms of bubonic plague usually appear suddenly within 2 to 5 days after the human is bitten by infected flea. In a…
Sarcoidosis, a systemic disease distinguished by noncaseating granulomatous inflammation of various tissues, can present with cutaneous manifestations. Various skin lesions - papules, pustules, plaques, macules, etc., including erythema nodosum and lupus pernio, may constitute the clinical presentation of cutaneous…
Sarcoidosis (Besnier-Boeck disease, Besnier-Boeck-Schaumann disease) is a multisystem inflammatory disease of unknown etiology, characterized by non-necrotizing granulomatous inflammation, predominantly in the lungs and intrathoracic lymph nodes.
The presentation of the disease is highly dependent on the extent of…
Hodgkin disease (Hodgkin lymphoma) is a type of lymphoma, that is marked by the presence of Reed-Sternberg cells. The 4 subtypes of Hodgkin lymphoma are: Nodular sclerosis Hodgkin disease, Mixed cellularity Hodgkin disease, Lymphocyte-rich Hodgkin disease and Lymphocyte-depleted Hodgkin disease.