https://www.vetsurgeon.org/f/clinical-questions/20905/weird-cat-skin I have had a young cat register at my new branch; it had it&#39;s primary vaccine course and microchip at a local vaccination clinic. The injection site swelled up massively, real dermal thickening but not just in one point, one thickened patch was abouten-USTelligent Community 10https://www.vetsurgeon.org/thread/125813?ContentTypeID=1Fri, 05 Dec 2014 14:45:27 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:a412605f-12e1-4c37-bfc0-74b2e3e6a882Martin Atkinson<p>[quote user=&quot;Hannah Wynne Richards&quot;]</p> <p>&nbsp;Have you checked it&#39;s clotting ability?</p> <p>Wynne</p> <div style="clear:both;"></div> <p>[/quote]I would have thought that if it was bleeding so profusely to such a minor insult as a microchip of vaccine it would be dead by now or at least very anaemic. The surgical site seroma seems explainable as a coincidental not uncommon surgical complication. If you&#39;re pretty sure it isn&#39;t a clotting disorder then skin biopsies would be in order in my book.</p> <p>&nbsp;</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/125789?ContentTypeID=1Fri, 05 Dec 2014 11:48:30 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:bd3de12a-f54e-4137-a5a9-59db0d3551acHannah Wynne Richards<p>&nbsp;Have you checked it&#39;s clotting ability?</p> <p>Wynne</p><div style="clear:both;"></div>