When trying to rule out the possibility of having COVID-19 we check for high fevers, muscle pain, headache and even loss of smell. However, new reports of COVID-19 cases are showing that patients are also developing “black and blue” type lesions in their hands and feet. The lesions seem blister like and many patients might confuse them for traumatic lesions if they aren't showing any other signs of COVID-19. These acute acro-ischemic lesions could be the expression of secondary microthrombosis due to endothelial damage and vascular disorders.
This reports the association between coagulation disorders and acro-ischemia manifesting with cyanosis, blisters and gangrene of fingers and toes in severe cases of COVID-19. Some patients with COVID-19 are also showing erythematous rash, urticaria or varicelliform
exanthema. However, it is not uncommon for these dermatological manifestations to come about with other viral infections.
The Centers of Disease Control and Prevention has not listed any kind of skin irregularity as a coronavirus symptom yet. However, as more patients test positive we are learning more about this disease. If further observations and laboratory data will confirm that we are facing a clinical sign of COVID-19, this dermatological sign could be useful for identifying children and adolescents with minimal forms of infection, but potential sources of further infection.