Eccrine glands produce sweat, and an alteration in the rate of sweat secretion manifests as hypohidrosis or hyperhidrosis. A marked increase in sweat production on the nose occurs in granulosis rubra nasi. Hyperhidrosis also is present on the central face, palms, and soles. This hyperhidrosis appears to be responsible for the secondary changes of erythema and erythematous papules. Significant underreporting may be a factor.
Patients have few physical complaints and most occurrences resolve completely at puberty.
No racial predilection has been described. No sexual predilection has been described. Peak incidence is from age 7-12 years. Usually starts in early childhood in patients aged 6 months to 10 years. Peak incidence is from age 7-12 years.