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Methotrexate-induced papular eruption appears in patients being treated with methotrexate, such as those with rheumatic disease, presenting with erythematous indurated papules, usually located on the proximal extremities. [1] It has been suggested that it may represent a cutaneous small-vessel vasculitis. [2]
Type III hypersensitivity, in the Gell and Coombs classification of allergic reactions, occurs when there is accumulation of immune complexes (antigen-antibody complexes) that have not been adequately cleared by innate immune cells, giving rise to an inflammatory response and attraction of leukocytes.
Rheumatoid arthritis [2] Possibly collagen and/or citrullinated self proteins Chronic arthritis, inflammation, destruction of articular cartilage and bone Tuberculin reaction (Mantoux test) [3] Tuberculin Induration and erythema around injection site indicates previous exposure
A rash is essentially inflammation in the skin that can be caused by either an external exposure or an internal factor,” says Joshua Zeichner, M.D., director of cosmetic and clinical research in ...
Methotrexate was originally developed and continues to be used for chemotherapy, either alone or in combination with other agents.It is effective for the treatment of several cancers, including solid tumours of breast, head and neck, lung, bladder, as well as acute lymphocytic leukemias, non-Hodgkin's lymphoma, osteosarcoma, and choriocarcinoma and other trophoblastic neoplasms.
The symptoms of DRESS syndrome usually begin 2 to 6 weeks but uncommonly up to 8–16 weeks after exposure to an offending drug. Symptoms generally include fever, an often itchy rash which may be morbilliform or consist mainly of macules or plaques, facial edema (i.e. swelling, which is a hallmark of the disease), enlarged and sometimes painful lymph nodes, and other symptoms due to ...
Caplan syndrome presents with cough and shortness of breath in conjunction with features of rheumatoid arthritis, such as painful joints and morning stiffness. Examination should reveal tender, swollen metacarpophalangeal joints and rheumatoid nodules; auscultation of the chest may reveal diffuse crackles that do not disappear on coughing or taking a deep breath.
Heat rash is caused by a blockage of the sweat duct in the skin, said Austin dermatologist Dr. Miriam Hanson, according to Sanova Dermatology. The type of rash depends on whether it’s a ...