This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rhinitis, Subject name: ENT
Charcot leyden crystal seen in? 
Select and explain. 
A. Allergic rhinitis, B. Acute sinusitis, C. Nasal polyp, D. Acute tonsillitis
A: Allergic rhinitis
Answer: A: Allergic rhinitis 
Explanation: 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)