Differential Diagnosis for Inner Lip Drawing In
- Single most likely diagnosis
- Stroke or Transient Ischemic Attack (TIA): Inner lip drawing in can be a sign of facial weakness, which is a common symptom of stroke or TIA. This is due to the involvement of the facial nerve or its nucleus in the brainstem.
- Other Likely diagnoses
- Bell's Palsy: This condition causes facial paralysis or weakness, which can lead to the appearance of inner lip drawing in due to the loss of motor control over the facial muscles.
- Myasthenia Gravis: An autoimmune disease that affects the nerve-muscle connection, leading to muscle weakness. Facial muscles can be involved, causing symptoms like inner lip drawing in.
- Parkinson's Disease: Although less common, Parkinson's disease can cause facial rigidity and reduced facial expressions, potentially leading to the appearance of inner lip drawing in.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Brainstem Tumor: Tumors in the brainstem can compress or invade the facial nerve or its nucleus, leading to facial weakness or paralysis, which might manifest as inner lip drawing in.
- Multiple Sclerosis: An autoimmune disease that affects the central nervous system. It can cause a wide range of neurological symptoms, including facial weakness, depending on the location of the lesions.
- Lyme Disease: In rare cases, Lyme disease can cause neurological symptoms, including facial palsy, which might lead to inner lip drawing in.
- Rare diagnoses
- Moebius Syndrome: A rare neurological disorder characterized by facial paralysis and impaired eye movements, which could result in the appearance of inner lip drawing in.
- Guillain-Barré Syndrome: An autoimmune disorder where the body's immune system mistakenly attacks part of its peripheral nervous system, potentially leading to facial weakness among other symptoms.
- Sjögren's Syndrome: An autoimmune disorder that can cause neurological symptoms, including facial weakness, though this is less common.