TRPA1 agonists applied to the skin in humans cause spontaneous pain and heat and mechanical hyperalgesia (Namer et al., 2005), whereas in rodents, intraplantar or topical cinnamaldehyde causes acute nocifensive behaviour, mechanical allodynia and heat hyperalgesia (Bandell et al., 2004; Proudfoot et al., 2006).
She tried an oral testosterone, but it caused a blood blister to form on her clitoris; a topical testosterone caused her to grow patches of dark hair wherever she applied it, whether on the inner thigh or forearm; and a dissolving tablet made her break out.
In 2006, the Food and Drug Administration issued a proposed ban on hydroquinone in over-the-counter products in response to animal studies that linked it to increased risk of cancer, and reports of topical use causing darkening of the skin.
Oral administration of the topical formulation caused no adverse effects.
Topical pain caused by the conventional PDT method can be reduced by this technique.
3 Long-term use of topical antibacterials cause resistant forms of P. acnes, and therefore is not recommended for chronic maintenance of acne.
Safety analyses showed that topical diclofenac caused skin irritation, mostly minor local skin dryness, in 42/107 (39%), leading to discontinuation of treatment in 5/107 (5%) participants.
Topical zinc caused greater TB skin-test augmentation in persons with lower plasma zinc concentrations (correlation coefficient [ R] = 0.3, p = 0.05), and persons with absolute plasma zinc deficiency (<0.6 mg/L) had significantly greater zinc-mediated augmentation.
There isn't a topical atmosphere or causes that approach those of the 60's".
TPA topical application also causes the production of oxidative stress that can accelerate local injury [26].
