What is the cremasteric (cremaster muscle) response?

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From the Research

The cremasteric response is a normal reflex in males and does not require any medical treatment, as it is a physiological response rather than a condition. This reflex is mediated by the genitofemoral nerve (L1-L2) and is tested by lightly stroking the inner thigh, which should cause the ipsilateral testicle to elevate. The cremasteric reflex is typically present in males from infancy through early adulthood but may diminish or disappear with age. It's an important neurological examination component when assessing potential testicular or neurological conditions. Absence of this reflex may indicate damage to the genitofemoral nerve, upper motor neuron lesions, or conditions like testicular torsion. The reflex serves a protective function by drawing the testicles closer to the body during cold exposure or potential danger. Some studies have investigated the use of medications such as antihistamines and corticosteroids in preventing hypersensitivity reactions, but these are not relevant to the cremasteric response 1, 2, 3. For example, a study published in 2018 found that premedication with antihistamines and corticosteroids had no significant effect on the effectiveness or safety of rapid drug desensitization in patients with confirmed hypersensitivity to paclitaxel 1. Another study published in 2022 reviewed premedication protocols to prevent hypersensitivity reactions to chemotherapy and found that a combination of prevention strategies using newer antihistamines, H2 antagonists, leukotriene receptor antagonists, and corticosteroids can reduce the occurrence and severity of hypersensitivity reactions 2. However, these studies are not relevant to the cremasteric response, which is a normal physiological response that does not require medical treatment. In fact, the use of medications such as cimetidine has been studied in the context of preventing radiographic contrast material reactions, but this is also not relevant to the cremasteric response 4. In summary, the cremasteric response is a normal reflex that does not require any medical treatment, and its absence may indicate an underlying neurological or testicular condition.

References

Research

Concomitant corticosteroid nasal spray plus antihistamine (oral or local spray) for the symptomatic management of allergic rhinitis.

European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2016

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