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What is Charcot leyden crystal seen in? and explain in detail?
ANSWER: (A) Allergic rhinitisREF: Harrison's 18th ed chapter 60Repeat 2012 Session I (Microbiology)Charcot leyden crystals are derived from eosinophils . They are indicative of a disease involving eosinophilic inflammation or proliferation, such as is found in allergic reactions and parasitic infections. Charcot-Leyden crystals are often seen pathologically in patients with bronchial asthma.Charcot Leyden crystal is seen in:Bronchial asthmaAmoebic dysentery (in stool)Allergic rhinitiasAllergic fungal sinusitis (AFS)Allergic bronchopulmonary mycosis (ABPM)