Winter bottom's sign in sleeping sickness refers to-: (A) Unilateral conjunctivitis, (B) Posterior cervical lymphadenopathy, (C) Narcolepsy, (D) Transient erythema
Answer is B. Sleeping sickness 

Fever
Loss of nocturnal sleep
Headache
Feeling of oppression
Pruritis and maculopapular rashes
Weight loss
Arthralgia
Hepatosplenomegaly
Lymphadenopathy, particularly of the posterior triangle of the neck → Winter bottom's sign