The first to raise the alarm to indicate a disease in your internal organs is your skin: hepatitis C, fatty liver, diabetes, intestinal infections of all kinds, and others.

A quick examination of your skin when taking the bath may save you a lot of suffering, as changing the color and shape of the skin not only predicts skin diseases such as eczema and skin cancer, but also reveals defects in the internal organs of the body, some of which may be dangerous, according to a report from the Deutsche Welle website.

The scientific explanation for this is that the skin is the largest organ in the body, and any change in the body's metabolism must affect the metabolism of the skin, so Jens Tesman of the German Dermatologists Association explained the matter.

And the most beautiful German doctor is the most important internal diseases that show symptoms on the skin:

1- The appearance of red painful spots on the lower leg and erythema nodosum (Erythema nodosum subcutaneous fat cell inflammation) indicates inflammations in the intestine such as ulcerative colitis and Crohn's disease.

2- Hepatitis disorders, hepatitis C, cirrhosis, or congestion of the bile ducts lead to jaundice (yellow pigmentation of the skin and whites of the eyes).

3- Fatty liver, hepatitis and cirrhosis, leading to vascular spiders (vascular birthmarks): expansion of blood vessels in the form of a spider web under the surface of the skin in the upper part of the body and in the abdomen.

4- Disturbances in the work of the vessels lead to the appearance of red spots on the palm and thumb.

5- Fat metabolism disorders (high blood lipids) that appear as small bumps on the eyelids, and sometimes as dark circles around the eyes.

6- Black thorns - which are brown spots on the neck and throat - indicate a bug in the blood sugar level.

7- Red-purple coloration of the cheeks and nose indicates the autoimmune disease known as lupus erythematosus.

8- Small blood spots on the lower leg indicate vasculitis.

And German doctor Jens Tasman advises the need to see a dermatologist when noticing any change in the skin to diagnose the condition if it is dermatological, or to refer the patient to a specialist doctor when suspected of a non-skin disease.