Lumps can form under the skin for many reasons, including cysts or swollen lymph nodes. Often they don’t require treatment, but if they change in size or appearance, contact a doctor for an exam.

What are dark circles under the eyes? Dark circles are when the skin beneath both eyes appears darkened. Dark circles are often the result of two dermatological conditions: Thinning of the skin ...

More from Science Following is a transcript of the video. Narrator: For some bug babies, your body is home sweet home. Human botfly larvae, for example, burrow under your skin, forming a pus ...

which contain pigment sacs that become more visible as small radial muscles pull the sac open making the pigment expand under the skin. Electrical activity within a chromatophore nerve (Fig.

Blubber is a thick layer of fat found under the skin of modern marine mammals such ... as it would be during the process of fossilisation. Science Photo Library Artwork: The fossil belongs to ...