Changes in skin color, moisture, and temperature can signal certain diseases.
In some situations, the skin is the most obvious sign of a medical issue.
If you notice changes in your own skin, you should see your healthcare provider about it.

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Jaundice can be identified in the sclera or the undersurface of the tongue.
Skin Moisture
Normal skin is supple and non-scaly.
Overhydrated skin can look swollen, wrinkly, or whitish in color.
Overly dry skin can appear scaly or feel saggy to the touch.
Abnormal temperature can affect the whole body.
Even more alarming is if the hot leg is also swollen and red.
This could be a sign ofdeep vein thrombosis (DVT)orcellulitis.
If your gut tells you that something is really wrong, don’t delay.
Go to your nearest emergency room, particularly if symptoms are developing rapidly.
Adeyinka A, Kondamudi NP.Cyanosis.
In: StatPearls [Internet].
2011 Jan 27;364(4):e6.
doi:10.1056/NEJMicm1005144
Brackenrich J, Fagg C.Hyperhidrosis.
In: StatPearls [Internet].
Owens KN, Goldstein C.EMS clinical diagnosis without the use of a thermometer.
In: StatPearls [Internet].
Yousef H, Ahangar ER, Varacallo.Physiology, thermal regulation.
In: StatPearls [Internet].