Winter bottom's sign in sleeping sickness refers to-
Unilateral conjunctivitis
Posterior cervical lymphadenopathy
Narcolepsy
Transient erythema
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