"I didn't used to do this before"... If you have red and yellow patches on your face, what are these symptoms?

Facial rash= 

Persistent rashes on the face may indicate an autoimmune disease called lupus. Dr. Donald said, "Lupus is a disease that can be diagnosed through blood tests, so it is best to receive treatment quickly," and added, "In addition to lupus, allergies and rosacea are also possible causes." Lupus commonly presents with a butterfly-shaped rash on both cheeks. Rosacea mainly causes redness, pus, and water blisters on the central areas of the face, such as the nose and cheeks.

Pale face=

Dr. Donald argued that poor eating habits, such as unhealthy diets, can cause pale skin. He explained that prolonged consumption of an unbalanced diet can lead to a lack of red blood cells or hemoglobin, making the face appear dull. He said, "If you're worried about pale skin, you should eat iron-rich foods such as red meat, beans, and lentils." Iron is a nutrient that contributes to the formation of normal red blood cells, and a deficiency makes it difficult to supply oxygen throughout the body.

Dry lips or skin=

Dry lips or skin can be a sign of dehydration. Dr. Donald said, "It could be a sign of weather changes or aging, but dehydration can also cause dryness in the face and skin." Signs of dehydration include dryness, redness, dry cough, thirst, and dark yellow urine. It is important to drink enough water regularly and, on hot days, to replenish the lost fluids through sweating.

Yellow skin or eyes=

If the skin or eyes start to turn yellow, it may be a sign of jaundice caused by the accumulation of bilirubin in the body. Jaundice is widely known as a signal of liver problems, but it can also be caused by issues with red blood cells, the gallbladder, the pancreas, and other factors. Dr. Donald said, "Jaundice can also appear due to hepatitis or sickle cell anemia." He added, "Since it can indicate various health problems, it is important to seek medical advice from a specialist to determine the underlying cause of a yellowish face." Sickle cell disease involves abnormal red blood cells that hinder oxygen transport and cause blood vessel blockages, leading to jaundice, anemia, and skin ulcers.

Facial swelling=

Swelling of the face may seem like a minor issue such as a simple allergy, but Dr. Park explained that it can be a common sign of kidney disease complications. This organ, about the size of a fist and reddish in color, contains a cluster of capillaries called glomeruli that excrete waste products from the blood to maintain internal stability. When the glomeruli are damaged, as in kidney disease patients, blood and protein leak into the urine, often causing swelling around the face or eyes.