I just wanted to re-emphasize the importance of abnormal blood flow in rosacea and how laser treatment and upcoming products like the constrictor SansRosa are helpful.
In this one study, measurement of facial blood flow of rosacea sufferers compared to non-rosacea sufferers is off the charts: Normal blood flow is very low and tightly controlled. An increase of resting blood flow by 2 times is incredibly high and pathologic. This study found rosacea affeced skin was 3 to 4 times higher than control subjects. In microvascular physiology, this is so high that it would ensure damage to blood vessels and the dermis.
J Am Acad Dermatol. 1992 Apr;26(4):590-3. Related Articles, Links
Rosacea: a study of clinical patterns, blood flow, and the role of Demodex folliculorum.
Sibenge S, Gawkrodger DJ.
Department of Dermatology, University of Sheffield, Royal Hallamshire Hospital, U.K.
BACKGROUND: Rosacea is a common facial eruption that has various clinical presentations. OBJECTIVE: We studied blood flow in lesional skin and explored the role of Demodex folliculorum in patients with rosacea. METHODS: A survey of clinical presentations was made in 108 patients with rosacea. Facial blood flow was studied by laser-Doppler flowmetry. The presence of Demodex was determined by microscopy of skin samples. RESULTS: The sex incidence was equal. The incidence peaked in the fourth and seventh decades of life. Lymphedema was common and was seen in 26 patients. Rhinophyma was present in 15 patients, mostly men. Eleven patients were black, an unexpectedly high number. Laser-Doppler flowmetry showed that lesional blood flow was three to four times that of control subjects. CONCLUSION: The findings indicate that the papillary dermal vasculature is dilated in rosacea. Demodex may be present.