Drug eruptionhttps://en.wikipedia.org/wiki/Drug_eruption
Drug eruption is an adverse drug reaction of the skin. Most drug-induced cutaneous reactions are mild and disappear when the offending drug is withdrawn. However, more serious diseases may be associated with organ injury such as liver or kidney damage. Drugs can also cause hair and nail changes, affect the mucous membranes, or cause itching without outward skin changes.

Drug eruptions are diagnosed mainly from the medical history and clinical examination. A skin biopsy, blood tests or immunological tests can also be useful.

Examples of common drugs that cause the eruption are antibiotics and other antimicrobial drugs, sulfa drugs, nonsteroidal anti-inflammatory drugs (NSAIDs), chemotherapy agents for malignancies, anticonvulsants and psychotropic drugs.

○ Diagnosis and Treatment
If you have a fever (increased body temperature), you should seek medical attention as soon as possible. The suspected drug should be discontinued (e.g. antibiotics, non-steroidal anti-inflammatory drugs). Before visiting hospital, oral antihistamines such as cetirizine or loratadine may help for itching and rash.
#Cetirizine [Zytec]
#LevoCetirizine [Xyzal]
#Loratadine [Claritin]

Blood test (CBC, LFT, eosinophil count)
Oral steroids and antihistamines with doctor's prescription

  • Drug eruption is characterized by affecting the entire body.
  • In cases where it affects the body widely, the diagnosis of Drug eruption should be considered instead of contact dermatitis.
  • AGEP (Acute generalized exanthematous pustulosis) is a type of drug rash.
References Current Perspectives on Severe Drug Eruption 34273058 
NIH
Adverse drug reactions involving the skin are commonly known as drug eruptions. Severe drug eruption may cause severe cutaneous adverse drug reactions (SCARs), which are considered to be fatal and life-threatening, including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), acute generalized exanthematous pustulosis (AGEP), and drug reaction with eosinophilia and systemic symptoms (DRESS). Although cases are relatively rare, approximately 2% of hospitalized patients are affected by SCARs.
 Fixed drug eruption - Case reports 35918090 
NIH
A 31-year-old woman presented to the dermatology department with an asymptomatic erythematous patch on the dorsum of her right foot. She had taken 1 dose of doxycycline (100 mg) the previous day as empirical treatment after picosecond laser treatment for acne scars. She had had a similar episode the previous year on the same site, after taking the same dose of doxycycline after laser treatment. She had no notable medical history, and no other local or systemic symptoms, including fever.
 Stevens-Johnson Syndrome 29083827 
NIH
Stevens-Johnson syndrome (SJS), and toxic epidermal necrolysis (TEN) are variants of the same condition and are distinct from erythema multiforme major staphylococcal scalded skin syndrome­, and other drug eruptions. Stevens-Johnson syndrome/toxic epidermal necrolysis is a rare, acute, serious, and potentially fatal skin reaction in which there are sheet-like skin and mucosal loss accompanied by systemic symptoms. Medications are causative in over 80% of cases.