Paederus Dermatitis Outbreak in Addis Ababa, Ethiopia: A Case-Control Study

Table 2

Frequency distribution of the illness characteristics among PD cases, Addis Ababa, Ethiopia, August 2018 (N = 75).

Characteristics of the illness	Frequency (N = 75)	Percent
Incubation period
One day	10	13.3
Two days	59	78.9
Three days	6	8.0
Number of lesions
One lesion	60	80.0
Two lesions	12	16.0
Three lesions	3	4.0
Sign and symptom
Itching	74	98.7
Pain	72	96.0
Fever	6	8.0
Vomiting	0	0.0
Burning sensation	70	93.5
Site of lesion
Face	52	69.3
Back	11	14.3
Back of neck	7	9.3
Shoulder	4	5.3
Lower limb	5	6.7
Upper limb	7	9.3
Lesion feature
Erythema	75	100.0
Linear lesion	46	61.3
Vesicles	32	42.3
Pustules	14	18.7
Erosion	38	50.7
Kissing lesion	7	9.3
Treatment
Topical steroid	30	40.0
Antibacterial	23	30.7
Antihistamine	11	14.7
Nonsteroid anti-inflammatory drug	6	8.0
Topical anesthesia	0	0.0
Local treatment	20	20.7
Complication
Conjunctivitis	7	9.3
Temporal blindness	6	8.0
Residual pigmentation	24	32.0
Secondary infection	11	14.6