Figure 8.1
Diffuse sweating of the palms
Secondary hyperhidrosis—Secondary hyperhidrosis is excessive sweating due to an underlying condition. There are a multitude of such secondary etiologies, including a medication side effect, hyperthyroidism, carcinoid syndrome, pheochromocytoma, or a paraneoplastic phenomenon. This form of hyperhidrosis is typically generalized.
Further Workup
Laboratory analysis for thyroid function is within normal limits. A chest x-ray is negative for masses or adenopathy. Further, the patient’s review of symptoms and physical examination do not support an underlying pathology. She does not take any medications or supplements.
Diagnosis
Primary focal hyperhidrosis
Discussion
Hyperhidrosis is a common presenting complaint, and typical distributions include palms/soles, axillae, face, and other regional foci.
For secondary hyperhidrosis, treatment involves the identification and elimination of underlying causative factors. Common medication culprits would include cholinesterase inhibitors, selective serotonin reuptake inhibitors, opioids and tricyclic antidepressants. Basic labs including thyroid function studies should be performed, and if guided by the review of symptoms, may also include a workup for metabolic by-products suggestive of a carcinoid tumor or a pheochromocytoma (urinary 5-HIAA, and 24 h urinary catecholamines and metanephrines, respectively). If the patient is female, LH/FSH studies could suggest the onset of menopause. A routine chest x-ray may reveal adenopathy or an intrathoracic mass suggestive of a lymphoma. Additional cancer workup should, again, be suggested by the review of systems. Age-appropriate malignancy screening such as colonoscopy and mammography should also be up to date.
In a typical case of an otherwise young, healthy individual, as outlined above, the most likely diagnosis is primary focal hyperhidrosis, which we term idiopathic but may involve a decreased response threshold to emotional and chemical stimuli.
Conventional treatment options would follow the algorithm below:
Topical desiccants such as aluminum chloride (20 %) applied nightly with a cotton ball for up to 6 weeks (limited by irritation), then two to three times per week as needed.
Topical anticholinergic agents such as glycopyrrolate, compounded 0.5–2 % in solution and applied nightly with a cotton ball applicator.
Oral anticholinergic agents (glycopyrrolate, oxybutynin, propanthelene)
Oral beta-blockers (such as propranolol)
Iontopheresis
Non-invasive microwave based technology (MiraDry™)
Onabotulinum toxin A injected in region of excess sweat (40–50 units per axillary vault)
Surgical removal of glands or regional sympathectomy as a last resort
An integrative approach to treatment would likely include many of the above measures, but would also touch on the mind-body component of the condition:
Biofeedback: This technique trains patients to control bodily processes (in response to stress triggers) that are normally involuntary, such as skin temperature or moisture level, using galvanic skin response to measure electrical conductance. The goal is to learn to control these responses without the help of monitoring.Stay updated, free articles. Join our Telegram channel
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