Positives

• Patients with Long COVID-related neuropathic pain or focal allodynia report that topical capsaicin cream can provide targeted relief over 1-4 weeks of consistent application, particularly for hand/foot or post-shingles-like symptoms Drugs.com.

Negatives

• Some patients find the burning sensation when applying capsaicin cream too uncomfortable to maintain consistent use; the effect typically requires daily application for several weeks before benefit appears Drugs.com.

Hurdles & Side Effects

• Patients describe an intense initial burning that lasts the first several applications; one patient reported very intense burning for about 15 minutes for four days, noting the pain can be mind-blowing but does subside, and that a cool fan helps during the adjustment phase. Drugs.com.
• Mayo Clinic's drug monograph instructs that capsaicin must be applied 3 to 4 times daily and rubbed in well, and that warm water, hot showers, sun exposure, and intense exercise after application all worsen the burning, so consistency and timing are non-trivial. Mayo Clinic.
• Roughly one in eight patients on low-concentration topical capsaicin get good pain relief over 4-12 weeks, meaning many patients invest weeks of daily application without benefit before knowing if it will work for them. PMC.
• On Drugs.com peripheral neuropathy reviews of topical capsaicin, the product carries an average rating of 5.6 out of 10, with 50 percent of reviewers reporting a positive experience and 38 percent reporting a negative experience, and one patient described relief from foot burning that lasted only four weeks before pain returned at the same intensity. Drugs.com.
• Cochrane and clinical reviewers note that the high-concentration 8 percent capsaicin patch must be applied under highly controlled conditions, often after local anaesthetic, due to the initial intense burning sensation, while low-concentration 0.025 to 0.075 percent creams require multiple daily applications over weeks to achieve nerve desensitization. Cochrane.
• A clinical approach paper on Long COVID-associated neuropathic pain recommends topical high-concentration capsaicin specifically for patients with focal neuropathic pain that fits within a treatable area, and especially in patients who do not tolerate oral neuropathic-pain medications. Springer Nature.