Sensations Evoked by Microstimulation of Single Mechanoreceptive Afferents Innervating the Human Face and Mouth

Microneedling can cause sneezing and eye tearing due to nerve stimulation, particularly near the temples and forehead. Some users find it lessens over time, while others prefer using finasteride and minoxidil for hair growth.

A user discusses their experience with at-home microneedling at 1mm for hair growth, feeling like they're hitting their skull. Other users suggest lowering the needle depth or stopping due to discomfort.

Microneedling can cause a sneezing reflex due to tingling in the nose. Users report this reaction, especially in the temple region.

Microneedling the scalp can cause sneezing, runny nose, and watery eyes due to nerve stimulation, histamine release, reflex actions, or sinus relief. Several users experience similar symptoms.

The "crunching" sound during microneedling is likely the needles penetrating the scalp's outer layers, not cutting hair. Users suggest using a derma stamp instead of a roller to avoid potential hair damage.

The user has been using topical finasteride and minoxidil for two years with decent regrowth and recently added microneedling to their routine. They are questioning if the small hairs observed are new regrowth from microneedling or just vellus or miniaturized hairs.