Types
- The classic symptom is intense pruritis especially at night
- The sites of predilection are the interdigital spaces, wrists, points of elbow, antecubital fossae, anterior axillary folds , umbilicus and the genitalia especially the gluteal cleft
- The most diagnostic or pathognomic finding is an intact S shaped or linear burrow with a papule or vesicle at its end housing the mite. Most common sites are web spaces of the hands, wrists, and lateral aspects of palms
- Generalized urticarial papules , excoriations and eczematous changes are secondary lesions caused by sensitization to the mite
- Tiny scaly papules on the nipple and male genitalia (glans, shaft, and scrotum) are pathognomonic of scabies
Nodular scabies: Itching nodules 5-20 mm diameter, red, pink, tan or brown in colour persist for several months. Commonly found in the scrotum
Scabies incognito : modifies clinical picture of classical scabies which mimic other dermatoses due to inappropriate use of topical steroids