This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Forschheimer spot is seen in ? 
Select and explain. 
A. Measles, B. Chicken pox, C. Erythema infectiosum, D. Rubella
D: Rubella
Answer: D: Rubella 
Explanation: Ans. is 'd' i.e., Rubella Clinical features of rubella Incubation period is 2-3 weeks (14-21 days). Clinical features are :? Prodrome (fever, sore throat, coryza) Lymphadenopathy (posterior auricular, cervical, suboccipital) Rash which begins on face and spreads down the body. Furschheimer spots is a petechial exanthem on soft palate. Complications include ahralgia, encephalitis and thrombocytopenia.