Granulosis Rubra Nasi Clinical Presentation
- Author: Basil M Hantash, MD, PhD; Chief Editor: Dirk M Elston, MD more...
History
Initially, hyperhidrosis is the most conspicuous feature of the disease; small beads of sweat are commonly noted on the tip of the nose. Excessive sweating may precede other changes by several years.
With persistent hyperhidrosis, diffuse erythema develops on the tip of the nose. Erythema gradually extends and may involve cheeks, upper lip, and chin. Erythema is covered by small beads of sweat that also may be evident over a wider area. Small erythematous macules, erythematous papules, and vesicles or papules may form at sweat duct orifices.
Check for symptoms of pain and itching. Check for family history; the condition typically is autosomal dominant familial. Particular sensitivity to sunlight may suggest an alternative diagnosis. Check for other symptoms, such as a racing feeling of the heart or a faint feeling, which may suggest an alternative diagnosis (eg, pheochromocytoma).
Many affected patients have poor peripheral circulation and hyperhidrosis of palms and soles. Granulosis rubra nasi usually resolves spontaneously at puberty; however, it occasionally persists indefinitely, in which case telangiectasia becomes the predominant feature.
Physical
Physical examination may reveal the following:
- Marked sweating on the tip of the nose is the most conspicuous feature.
- Redness is seen on the tip of the nose and onto the cheeks, upper lip, and chin. Red areas may be covered by small beads of sweat.
- Small erythematous macules and papules may occur.
- Small vesicles or pustules may form at the sweat duct orifices (miliaria crystallina).
- The tip of the nose is cool and not infiltrated.
- Poor peripheral circulation and hyperhidrosis of the palms and soles may be noted.
- If the condition does not resolve completely at puberty, residual telangiectasias and small cysts may occur.
- Any evidence of redness, solar lentigos, actinic changes, actinic keratoses, or skin cancers on the face, ears, or exposed areas of the arms suggests an alternative diagnosis with photosensitivity or photo damage. Evidence of chronic photo damage in childhood is rare. Photosensitive dermatoses are usually easy to differentiate from granulosis rubra nasi because they are more extensive and do not show the characteristic hyperhidrosis. Photosensitive dermatoses may produce erythema on the nasal tip and can be associated with miliaria.
- Tachycardia and diffuse sweating may suggest an alternative diagnosis such as pheochromocytoma. One report exists of a 19-year-old woman with hyperhidrosis, granulosis rubra nasi, and tachycardia.[4] Surgical removal of the pheochromocytoma was followed by involution of the hyperhidrosis, regression of the nasal dermatosis, and normalization of urinary catecholamines.
Causes
Most occurrences of granulosis rubra nasi are genetically determined, with an autosomal dominant or autosomal recessive pattern.[5, 6, 7] The gene locus has not been identified.
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